From the gland it moves up the hair shaft and ultimately arises to the skin surface through the hair follicle. Found insideThis book uses visual analogies to assist the student in learning the details of human anatomy and physiology. SURVEY . 4. Overexpression of the signalling factors Wnt, Myc and SHH all increase the likelihood of sebaceous gland presence. Ectopic Sebaceous Glands can also arise on private organs like the penis and even in the esophagus (the passage lying between the stomach and the pharynx). This type of cancer is often misdiagnosed as other, less serious afflictions. Sebaceous glands are microscopic organs in the skin that secrete an oily substance called sebum that lubricates and waterproofs the skin. A) hair follicle B) arrector pili C) dermis D) hypodermis E) sebaceous gland Answer: a Level: 1 For questions 70 to 74 match the following terms with the appropriate definition or description. This is an online quiz called Sebaceous Glands Diagram. This picture also contains parts such as fat, collagen, fibroblasts, sweat gland, capillaries and so on. In extreme cases, the lesions are destroyed with laser therapy or Electrocautery. A sebaceous gland is a type of oil gland that is found all over the body and helps to lubricate and waterproof the skin and hair. [31] Retinoids reduce the amount of sebum produced by the sebaceous glands. The sudoriferous glands are referred to as. This can cause a comedo (commonly called a blackhead or a whitehead), which can lead to infection, particularly by the bacteria Cutibacterium acnes. Samples of human skin: hair follicle Isolated sample of human skin with a hair follicle, dermatology, skin structure sebaceous gland stock illustrations. In these animals, it causes hair loss, though the nature and distribution of the hair loss differs greatly.[46]. The structure, consisting of hair, hair follicle, arrector pili muscles, and sebaceous gland, is an epidermal invagination known as a pilosebaceous unit. Epidermis, dermis, hypodermis fat. These are connected to the hair follicles over the skin. sebaceous gland. sebaceous gland. Tags: Question 10 . Sebaceous Glands. Sebaceous Gland Lipids: Friend Or Foe? The chemical breakdown of triglycerides in the sebum, possibly by bacterial action, releases free fatty acids, which in turn trigger an inflammatory reaction producing the typical lesions (pimples) of acne. However, the duct emerging from the gland opens inside the pilary canal above the duct of the sebaceous gland or directly on the surface of the skin. 6 and Fig. [5], Insertion of sebaceous glands into hair shaft. sweat gland. In case of impairment in Sebaceous Gland cysts may also appear on the skin. [7] These cells express Na+ and Cl− ion channels, ENaC and CFTR (see Fig. Key Terms. [41]: 85–86 In The Principles of Physiology 1834, Andrew Combe noted that the glands were not present in the palms of the hands or soles of the feet. 1. Hair follicles and Sebaceous Sweat Glands are thus dependent on each other. Sebaceous Glands can be found in all parts of the skin in the human body except soles and palms. Dermis: Connective tissue layer beneath the epidermis. Game Points. Addressing one of the most commonly encountered conditions seen by the dermatologist, this source analyzes the pathophysiology, evaluation, diagnosis, clinical features, and control of acne. In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of the hands and soles of the feet. The sweat gland can either be apocrine, such as those found in the armpits and the groin area, or the eccrine glands, which are found all over the body. sebum: A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat and cellular debris. The outer covering of the hair shaft, the cuticle, is the protective outer layer of the hair. Earwax, also known as cerumen, is produced by glands located in the skin of the outer one-third of the ear canal.There are two types of glands that produce cerumen: sebaceous glands and apocrine sweat glands.The sebaceous glands release sebum — primarily made of fatty acids — which mix with the apocrine gland secretions to form cerumen. 26) In the diagram of skin shown below, where is the sebaceous gland? acne. [27] It also serves to create an airtight seal when the eyes are closed, and its lipid quality also prevents the eyelids from sticking together. Howstuffworks 2005 basically the sweat gland is a long coiled hollow tube of cells. Skin Anatomy. Skin is the largest organ in the body. Q. Found inside – Page 975.22 Simple branched acinar gland (a) Diagram (b) Masson trichrome (LP) Sebaceous glands provide a good example of simple branched acinar glands. Order of the Trustees. This normally happens when the fibrous protein compound keratin accumulates on a particular region of the skin. ", "Expression of epithelial sodium channel (ENaC) and CFTR in the human epidermis and epidermal appendages", "Why do we have apocrine and sebaceous glands? In a few areas of the body, disproportionately large sebaceous glands are associated with very small hair follicles; in other areas there are glands that…, …the oily product of the sebaceous gland, to the skin surface. This Schaum's Outline gives you 1,470 fully solved problems Clear, concise explanations of all human anatomy and physiology concepts A complete review of the human body’s cellular chemistry and structure, tissues, systems, immunity, and ... Transcribed image text: What does structure "D" represent on the diagram? The gland can also be found in non-hairy regions of the skin, such as the eyes, nipples, Labia Minora, penis and nose. The sebaceous glands are usually attached to hair follicles and pour their secretion, sebum, into the follicular canal. The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of preening.It is located dorsally at the base of the tail (between the fourth caudal vertebra and the pygostyle) and is greatly variable in both shape and size. Figure 2. Attachments – Originates from the medial orbital margin, the medial palpebral ligament, and the lacrimal bone. Sebaceous cysts normally disappear by themselves over time. Each gland has a … Found inside – Page 71Diagram B pictures sick, pimply skin. Notice that the sebaceous gland is a swollen mass of trapped oil, waste and infectious bacteria. ... (see diagram). Sebum secretion is under hormonal control and increases substantially at puberty, then continues at an increased rate into advanced adult life. [11][12] The cells are constantly replaced by mitosis at the base of the duct. Sebum, an amorphous lipid matrix secreted by the sebaceous gland (SG), and epidermal lipids in the stratum corneum (SC), represent the main lipid compartments at the skin surface 7. Most sebaceous glands are associated with hair follicles. Found inside – Page 30Diagram B pictures sick, pimply skin. Notice that the sebaceous gland is a swollen mass oi trapped oil, waste and infectious bacteria. The glands use various ducts and pores on the skin to transport the secretion to lubricate the skin. Hence it can spread to surrounding tissues of the body. SURVEY . [44] This gland is present more frequently in males than females, and it is hypothesized that the secretions of the gland are used for scent-marking. This diagram shows the main features of a hair, and its associated sweat gland. [3] Some sebaceous glands have unique names. In the human ear, this occurs in the outer portion of the ear canal where ear hairs are present. The combination of sebaceous gland, arrector pili muscle, and hair follicle is known as the pilosebaceous unit. The meibomian glands are also known as tarsal glands, Zeis glands and palpebral glands. The increased production of sebum can lead to a blockage of the sebaceous gland duct. Sebaceous Glands on penis appear yellow or off-white in color. It is the Sebaceous Gland that are responsible for the greasiness of the skin. Identify each part of the skin diagram for number 4. answer choices . These increase in size with passing time and generally become yellow colored because of lipid addition to them. Q. These are seen as little swellings on the skin surface and are normally yellow in color. Surrounding the female nipple, areolar glands are specialized sebaceous glands for lubricating the nipple. They secrete an … Cross section of the Human skin with hair follicle, blood vessels and glands. ", "Mammalian Wax Biosynthesis II: Expression cloning of wax synthase cDNAs encoding a member of the acyltransferase enzyme family", "The Effect of Estrogen and Androgen on the Sebaceous Gland Turnover Time", "The effect of 5alpha-reductase inhibition with dutasteride and finasteride on bone mineral density, serum lipoproteins, hemoglobin, prostate specific antigen and sexual function in healthy young men", "The concept of the acid mantle of the skin: its relevance for the choice of skin cleansers", "Thematic Review Series: Skin Lipids. This disease of the sebaceous glands leads to over-secretion of sebum. You need to get 100% to score the 7 points available. This article was most recently revised and updated by, https://www.britannica.com/science/sebaceous-gland, National Center for Biotechnology Information - Physiology, Sebaceous Glands. It has also been described in cats, and one report describes this condition in a rabbit. While every effort has been made to follow citation style rules, there may be some discrepancies. cradle cap. Cross section of the skin Illustrations Sebaceous glands Apocrine sweat glands Eccrine sweat glands/ In Japanese. Most sebaceous glands are associated with hair follicles. Over activity of Sebaceous Glands can give rise to skin conditions like : This disease is caused when a fatty mass gets retained within the sebaceous glands. What does "E" represent? Sebaceous glands secrete acids that form the acid mantle. A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. Following production, this oily substance is secreted through a small duct. Sweat gland (cross-sectional view) Sweat glands open into the skin’s surface, or in the case of apocrine sweat glands, into hair follicles. In the eyelids, meibomian glands, also called tarsal glands, are a type of sebaceous gland that secrete a special type of sebum into tears. Scalp cross section showing hair follicle with sebaceous glands. The early days. Sebaceous glands of the breast are also known as Montgomery's glands. [31] Sebaceous filaments—innocuous build-ups of sebum—are often mistaken for whiteheads. Found inside – Page 565The explanation of the diagram is as follows : The epidermis , bulging ... on one side the outer root - sheath produces the pouch of the sebaceous gland . It may also bring about a change in the sebum quality. Sebum is created in the Sebaceous glands. Here you will learn about mammary glands function in males and females with labelled diagram. Trapped bacteria normally thrive on the warm and moist areas and gets a ride into the gland … The reticular layer also contains hair follicles, sweat glands, and sebaceous glands. There are also sebaceous glands located in this layer, known as the glands of Zeis. Here are some Sebaceous Gland pictures to help you get an idea about its appearance. Sebaceous glands are microscopic exocrine organs responsible for keeping the skin moist and protected with the secretion of sebum. Name the layers of the epidermis and describe the characteristics of each. 5. Sweat glands. Overactive Sebaceous Glands are mainly visible in young persons, especially in people who are aged between 12 and 20 years. Carcinoma tumors can also cause Muir-Torre syndrome (MTS), an inherited cancer syndrome that gives rise to skin lesions, sebaceous tumors, colon cancer, breast cancer and other serious conditions. This happens due to a number of reasons. Sebaceous carcinoma most often affects the eyelids. While coming up, it helps to push out any dust particle, germs or skin debris that may have somehow entered into the hair follicle. The glands are responsible for depositing an oily secretion on the hairs called sebum. Several related medical conditions involve sebum—including acne, hyperplasia, and sebaceous adenoma. These glands are located in the dermis, usually next to hair follicles. A few people view this as an abnormal condition and try to remove the glands by poking them. In contrast, seba-ceous glands have short ducts leading from a fan-shaped base. blood vessels. Epidermis, Dermis, Subcutaneous Layer, Hair, Stratum Corneum, Capillaries, Sebaceous Gland, Melanocyte, Sweat Gland, Sweat Pore, Hair Follicle, Blood Vessel. Unstimulated, the submandibular glands provide the majority of saliva to the mouth. [45], Sebaceous adenitis is an autoimmune disease that affects sebaceous glands. Pingback: Here’s Why You Ought to Realize What Causes Acne Before You Can Deal With It Effectively | Your Health Station, Pingback: In Order to Treat and Avoid Acne You Need to Understand What Causes Acne : Stop Panicking, Pingback: Here’s Why You Should Recognized What Causes Acne Before You Can Deal With It Successfully - All Health Zone, Sebaceous Glands – Location, Functions and Pictures, Bartholin Gland – Pictures, Location, Problems, Abscess and Inflammation, Sebaceous Cyst (Epidermal Cyst) – Pictures, Causes, Treatment and Removal, Folliculitis – Pictures, Types, Symptoms, Causes and Contagiousness, Itchy Scalp – Causes, Treatment and Home Remedies, Swollen Eyelid – Causes, Symptoms, Treatment and Home Remedies, How long does nicotine stay in your system. Philip W. Wertz, in Skin Aging Handbook, 2009 5.2.1 Distribution and Physiology of Sebaceous Glands. These glands are generally located in the hairy parts of the body. Sebaceous glands release their glandular secretions via a holocrine mechanism into the hair follicle shaft. The first outlines of the hair follicle and what is known as the pilo-sebaceous unit (comprising the hair shaft, follicle, sebaceous gland and erector pili muscle) appear on a foetus’s eyebrows, chin and upper lip from the eighth week of pregnancy. 3. Just like salivary, sweat, sebaceous and mucous glands, it is an exocrine gland. Skin Layers. ... Eccrine sweat glands differ from sebaceous glands. Get started! 7 in reference[7]). Sebaceous Gland Carcinoma gives rise to painful bumps over the skin. 2.1 B Multiple Choice Required information Multiple Choice O hypodermis hair follicle О O epidermis and dermis arrector pili sebaceous gland What does … Found inside – Page 182... atrophy of sebaceous glands , and epilation . A. F. I. P. Acc . No. 219474-3191 . Figure 133. Diagram of the effects of a high dose of roentgen rays . The epidermis. [14] Sebum is odorless, but its breakdown by bacteria can produce strong odors. When provided with a model or diagram of the skin, recognize and name the following skin structures:epidermis, dermis (papillary and reticular layers), hair and hair follicle, sebaceous gland, and sweat gland. Cosmetology and professional skin care. The diagram illustrates glands of the skin. Sebaceous Glands secrete an oily substance known as Sebum that lubricates the hair and skin of mammals. It is made up … The hair follicle itself is associated with an arrector pili muscle, which contracts to cause the follicle to stand upright. Sebaceous gland, small oil-producing gland present in the skin of mammals. n. Any of various glands in the dermis of the skin that open into a hair follicle and produce and secrete sebum. [4] Some species of bat, including the Mexican free-tailed, have a specialized sebaceous gland occurring on the throat called a "gular gland". [16] Dihydrotestosterone acts as the primary androgen in the prostate and in hair follicles. sebaceous gland - a small, sack-shaped gland that releases oily (fatty) liquids onto the hair follicle (the oil lubricated and softens the skin). Today 's Points. arrector pili. When the sebaceous glands suffer an inflammation, pustules or pimples appear over the skin. Dobson, G. E. (1878). Found inside – Page 3Borst 10 in his book on tumors shows a picture of a sebaceous adenoma which was made ... He says that a pure adenoma of sebaceous glands , either a solitary ... Vector diagram for educational, medical, biological, and scientific use vector art, clipart and stock vectors. Melanoma is cancer that begins in melanocytes (cells that make the pigment melanin). The sebaceous gland is important because it produces sebum which is a natural hair conditioner. 1 The sebaceous glands are part of the integumentary system, which includes the skin, hair, nails, and other structures that help protect the body from environmental or physical damage. The hyperactivity of sebaceous glands gradually decreases after a person grows older than 20 years. anywhere from 2,500 to 6,000 sebaceous glands per square inch. Sebaceous glands Sebaceous, or oil, glands, are attached to hair follicles and can be found everywhere on the body except for the palms of the hands and the soles of the feet. Difficulty: Medium Learning Objective 1: 5.1 Describe the composition of the epidermis and dermis. [1] In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of the hands and soles of the feet. An important disease of the pilosebaceous unit…. Sebaceous glands are microscopic exocrine glands in the skin that secrete an oily or waxy matter, called sebum, to lubricate and waterproof the skin and hair of mammals. Sebaceous glands are involved in skin problems such as acne and keratosis pilaris. More sebum is produced after puberty. 2,490 sebaceous gland stock photos, vectors, and illustrations are available royalty-free. Sebaceous Gland Sebaceous glands are small, sack-shaped glands which release an oily substance onto the hair follicle that coats and protects the hair shaft from becoming brittle. Found inside – Page iiThis book has been designed to help medical students succeed with their histology classes, while using less time on studying the curriculum. Orbicularis Oculi. Found inside – Page 15Diagram showing characteristics of spermatozoa of vertebrates 323 272. ... Section of alveoli from sebaceous gland of human scalp ( Huber ) 359 303. Cuticle. Sebaceous gland produces sebum that helps to oil the hair and skin making them moist, Sweat gland (also called Sudoriferous or sudoriparousglands) produces sweat that helps to cool off the body and therefore helps in regulation of body temperature through the process of perspiration; The pancreas this is both an exocrine and an endocrine gland. It is the oily secretion of the Sebaceous Glands which keeps the hair and skin moisturized and prevents them from cracking, turning dry and getting brittle. Found inside – Page 494Borst 10 in his book on tumors shows a picture of a sebaceous adenoma which was made ... He says that a pure adenoma of sebaceous glands , either a solitary ... Found inside – Page 567Sebaceous glands are located in the surface skin layer of the inguinal pocket ... is comprised of fatty " embryonic " hepatoid glands ( Diagram 3 ) . sebaceous gland synonyms, sebaceous gland pronunciation, sebaceous gland translation, English dictionary definition of sebaceous gland. In hot conditions, the secretions emulsify the sweat produced by the eccrine glands and this produces a sheet of sweat that is not readily lost in drops of sweat. During pregnancy and lactation these glands, also called Montgomery's glands, become enlarged.[26]. [3], Sebaceous glands are also found in hairless areas (glabrous skin) of the eyelids, nose, penis, labia minora, the inner mucosal membrane of the cheek, and nipples. 0. - 100X Here is the sebaceous gland from the image above shown at a higher magnification. "Important general basic science concepts are extensively covered in dedicated chapters appearing in an early section of the book, allowing subsequent clinical chapters to focus on relevant disease-specific pathophysiology in addition to ... The percentage breakup of the composition of sebum shows it to be comprised of. Protecting the skin is the main function of Sebaceous Glands. [5] Sebaceous glands develop from the same tissue that gives rise to the epidermis of the skin. "[41]: viii He describes them in the oral cavity and on the head, eyelids, and ears, as "universally" acknowledged. Eccrine sweat glands have ducts that lead to the surface of the skin. [6][13] The composition of sebum varies across species. Corrections? Human skin layer illustration for medical and health care use. Found insideThis book also emphasizes on various genetic and nongenetic alopecia types, differential diagnosis, and the measurement of hair loss. One chapter of the book is devoted to natural products for hair care and treatment. Designed as an easy-to-use, practical guide to tumors of the eye, lids, and orbit, this Open Access book comprehensively addresses surgical treatment and management of diseases related to ophthalmic oncology. Picture 1 – Sebaceous Gland Picture Source – skintactix. You can see two lobes of the gland, the smaller one above the one labeled "seb". One or more sebaceous glands surround each hair follicle at a point about 1/3 of its length beneath the skin's surface. Sebaceous carcinoma is a rare, highly aggressive and lethal malignancy with a predilection for the periocular region. There is a printable worksheet available for download here so you can take the quiz with pen and paper. duct of apocrine sweat gland. Your skin has two types of sweat glands: eccrine and apocrine. girl with problem and clear skin. Identify each part of the skin diagram for number 5. These glands are primarily found on areas like the face, scalp, chest and back. [40] Sebaceous glands have been documented since at least 1746 by Jean Astruc, who defined them as "...the glands which separate the fat. acne - sebaceous gland stock illustrations. The pilosebaceous glands of Zeiss and the apocrine glands of Moll are located anterior to the meibomian glands within the distal eyelid margin. The epidermis is the outermost layer of the skin, and protects the body from the environment. Sebaceous Glands are very small glands in the skin that are only visible under the microscope. Found inside – Page 214Diagram based questions (i) Hair shaft (ii) Sebaceous gland (iii) Erector muscle (iv) Epidermis (v) Dermis (vi) Sweat gland (vii) Subcutaneous layer 2. Sebaceous carcinoma may begin as a painless lump or thickening of skin on the eyelid. http://en.wikipedia.org/wiki/Sebaceous_gland, http://www.wisegeek.com/what-is-the-sebaceous-gland.htm, http://www.nlm.nih.gov/medlineplus/ency/article/000842.htm, http://www.doctorsofusc.com/condition/document/100537, http://www.upmc.com/healthatoz/pages/healthlibrary.aspx?chunkiid=100537. Epidermoid and pilar cysts are commonly referred to as 'sebaceous cysts' (pronounced 'seb-ay-shuss'). This is a non-threatening disorder of the sebaceous glands commonly seen in middle aged and old adult persons. 1978 Jan; 274:37–50. From the beginning of the fourth month they start to develop on the scalp. Found inside – Page 53Sketch the Muscles of the Hair , and 41a ( 1 ) Diagram of the Skin and further on the Sebaceous Glands . Tactile Organs . Point to the Sectional Drawing ... [19] The pH of the skin is between 4.5 and 6.2,[20] an acidity that helps to neutralize the alkaline nature of contaminants. Introduction. Eccrine glands occur over most of your body and open directly onto the surface of your skin. Human, Helly's fluid, toluidine blue and erythrosin stains, 162 x. Epidermis: Stratified squamous cornified epithelium of the skin. Found inside – Page 5339a ( 2 ) Show again the Refrac- the Diagram , draw attention to the 46a ( 1 ) ... and 41a ( 1 ) Diagram of the Skin and further on the Sebaceous Glands . These glands are generally located in the hairy parts of the body. These can even develop on the inner side of the eyelids. A hair follicle with associated structures. Pilosebaceous units are found in all regions of the skin except for the palmar and plantar surfaces [Montagna, 1963].Pilosebaceous units are most dense on the scalp, followed by the face, neck, and shoulders. Found inside – Page 82Sebaceous gland remnants could be seen within the foci of inflammation. ... Free sebaceous gland Dermal papilla Epitrichial gland Figure 13.4 Diagram of ... A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. Picture 3 – Sebum Picture Source – patient. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating … In a few areas of... Get a Britannica Premium subscription and gain access to exclusive content. It is because of Sebaceous Glands hair follicles remain free from foreign objects. Catalogue of the Chiroptera in the collection of the British Museum. Sebaceous glands are composed of lobules of large polyhedral pale-staining cells containing abundant lipid droplets and small dark-staining central nuclei. Found inside – Page 261Hair shaft Epidermis Oil/Sebaceous gland Dermis Nerve Lymph vessel Artery Vein Hair follicle Fatty tissue Sweat gland Figure 2 Diagram of human skin ... A. hair follicle B. arrector pili C. dermis D. hypodermis E. sebaceous gland What does structure "E" represent on the bone diagram? 3. A cutaway diagram of a section of skin shows where sweat is produced in glands which lay coiled just beneath the surface. It begins as pink, raised lesions on scalp that turn yellow/brown and flake off. The sebum comprises of lipids, wax and clusters of dead fat-producing cells. … Antibiotics are the medicines generally used for swollen penis Sebaceous Glands treatment. Each gland is composed of numerous acini attached to a common excretory duct through which they discharge their secretions (sebum) onto the hair shaft and epidermis. 2 / 10 ( 1 vote ) In this image, you will find hair, sebaceous gland, sensory nerve ending, epidermis in the skin anatomy. This site uses Akismet to reduce spam. The sebaceous glands are involved in the development of the common adolescent skin disorder known as acne vulgaris. Br Vet J. [2] There are two types of sebaceous gland, those connected to hair follicles and those that exist independently. Hormones control the shape, looks, urges, and emotions of the body. It produces and releases milk onto the external body surface through a duct for feeding the young offspring. Sebaceous Gland Carcinoma tumors cause death of many patients due to spreading of the disease to other parts of the body (metastasis). 120 seconds . contains no blood vessels. Sebaceous Glands can be found in all parts of the skin in the human body except soles and palms. It is commonly found in the eyelid, but it can occur anywhere since sebaceous glands are found throughout the body. Vector illustration about medical diagram These are connected to the hair follicles over the skin. Found insideThe purpose of this book is to provide nurses and other health workers with knowledge of the structure and functions of the human body and the changes that take place when diseases disrupt normal processes. See sebaceous gland stock video clips. 3. These glands are located in the dermis. peptide hormones. Add the following labels to the diagram of the skin shown below: Epidermis, dermis, fat cells, hair shaft, hair follicle, hair erector muscle, sweat gland, pore of sweat gland, sebaceous gland, blood capillaries. Gland ( a gland that releases its product by exocytosis ) which can contract to propel its to! 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Know if you have Any questions, muscle and so on writer and editor 15. The areola sebaceous gland diagram surrounds the nipple in the human body except soles and palms accumulates a... Cuboidal or flattened precursor cells between the basement membrane of each lobule the...
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