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| | EPXTHELXUX C & |
 | | For example, the epithelium (epidermis) of the skin is classified as keratinized (cornified) stratified squamous; the epithelium of the esophagus is a moist type of stratified squamous; the lining of the stomach and intestines is simple columnar. | | | It is readily demonstrated with the periodic acid-Schiff (PAS) or silver techniques. | | | This type of epithelium gives a false sense of stratification because the nuclei are located at various levels. |
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http://www.mc.vanderbilt.edu/histology/labmanual2002/labsection1/Epithelium03.htm
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| | Cancer Information, Research, and Treatment for all Types of Cancer OncoLink |
| | This is related to the age of the patient and the degree of squamous metaplasia. | | | The normal physiologic process by which columnar epithelium evolves into squamous epithelium. | | | However, these changes are rarely associated with CIN, in contrast to the significance to these findings in the non- DES patient. |
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http://www.oncolink.upenn.edu/types/article.cfm?c=6&s=17&ss=131&id=6029
(1761 words)
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| | Epithelia |
| | Stratified squamous epithelium is found in the skin and in the passageways leading to the exterior, such as the mouth, anus and vagina. | | | By focusing the microscope up and down, both epithelial layers may be brought into view separately. | | | They will be examined later when you study organ systems. |
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http://ect.downstate.edu/courseware/histomanual/epithelia.html
(1472 words)
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| | Cloacal Papillomas in Psittacine Birds: A Retrospective Histopathologic Review |
| | The presence of squamous and transitional epithelium in the majority of cases reflects clinical observations that cloacal papillomas commonly arise at or near the mucocutaneous junction adjacent to the vent. | | | The vent is lined by stratified squamous epithelium. | | | The mean and median ages of affected birds are similar to those given in other reports. |
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http://www.vet.uga.edu/IVCVM/1998/Stedman/Stedman.htm
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| | Exercise 4: Epithelium |
| | The best example of stratified squamous epithelium, however, is the skin: the general body surface is covered with it, as slides 7 and 11 demonstrate. | | | A good example of the mitotic activity of epithelia is found in the intestine, slides 40 and 41. | | | This example is from the footpad of a dog. |
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http://education.vetmed.vt.edu/Curriculum/VM8054/Labs/Lab4/Lab4.htm
(1648 words)
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| | SIU SOM Histology INTRO |
| | The structural and functional integrity of this epithelium is vital for normal health. | | | The shape of this boundary is complex, continuing unbroken from skin through various orifices and including the many invaginations into the internal organs of the respiratory, urinary, digestive, and gastrointestinal tracts. | | | Epithelium covers nearly all external and internal body surfaces. |
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http://www.siumed.edu/~dking2/intro/epith.htm
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| | ASCCP - Practice Recommendations - Practice Management Materials |
| | This proliferation of reserve cells is seen as the flattening and fusing of columnar villi. | | | Local immunity is suspected to play an important role in the wide variety of outcomes seen among individuals following HPV infection and in the susceptibility to the development of neoplasia. | | | The squamocolumnar junction, where these two meet, is the most important cytologic and colposcopic landmark, as this is where over 90% of lower genital tract neoplasia arises. |
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http://www.asccp.org/edu/practice/cervix/histology.shtml
(2398 words)
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| | Epithelia and Tissue Lab |
| | During this laboratory exercise be aware that slides of any organ will usually display more than one epithelium and more than one connective tissue type. | | | Pan through to the other side of the tissue to the next natural edge immediately opposite the transitional epithelium. | | | 63 Axillary skin, 62 Scalp, 5 Stratified squamous epithelium, 76-78 Esophagus |
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http://www.fsu.edu/~histo/two~1.htm
(2932 words)
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| | Epithelium - Wikipedia, the free encyclopedia |
| | Stereocilia: Similar to cilia, except they have no internal structure and are non-motile. | | | Keratinized stratified squamous: Found in human skin (specifically, the dead superficial layer) | | | Places where squamous cells can be found include the alveoli of the lungs, the filtration of the kidneys, and the major cavities of the body. |
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http://en.wikipedia.org/wiki/Epithelium
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| | [No title] |
| | A cancer of epithelium, such as skin or the lining of the intestinal tract. | | | Refers to radiation therapy given by a radiation machine, which is several feet from that part of the body being exposed to the x-ray beam. | | | CARCINOMA-IN-SITU(sy two)...........A premalignant condition usually of squamous epithelium. |
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http://www.gyncancer.com/glossary.html
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| | Laboratory Two: Epithelium I |
| | Identify the luminal and non luminal surfaces of the small intestine. | | | In some slides, the circular profiles of pancreatic acini can be observed. | | | In some slides, circular profiles of pancreatic acini can be observed. |
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http://medinfo.ufl.edu/year1/histo/review/lab02.html
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| | Epithelium Lab |
| | You will have the opportunity to observe additional examples of stratified squamous epithelium during your study of the integument. | | | Therefore learn the characteristics of the tissue, rather than relying on memorizing the slides themselves. | | | Transitional epithelium is the specialized epithelium associated with urinary structures. |
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http://courses.missouristate.edu/emh420f/unit_1/Epithelium_lab.htm
(1225 words)
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| | ANIMAL TISSUES |
| | The epithelium of skin (external covering), the epithelium of the small intestine (internal lining), and the epithelium of blood vessels (internal lining) are examples of epithelial tissues. | | | Slide of section of Caucasian skin: stratified squamous epithelium | | | The outer epithelial layer of human skin is a stratified squamous epithelium. |
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http://www.usd.edu/biol/labs/101/tisu103.htm
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| | EPITHELIUM |
| | Therefore epithelium comes in a variety of forms adapted for a particular function. | | | When relaxed, the surface cells obtain a rounded morphology (Transitional Relaxed 1). | | | Pseudostratified epithelium is found primarily in the respiratory system and is often referred to as "Respiratory Epithelium". |
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http://lifesci.rutgers.edu/~babiarz/epithe.htm
(764 words)
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| | Figures |
| | A representative parous adolescent cervix showing the outer boundaries of several important areas of exocervical epithelium that correspond to the histological representations in Figure 2. | | | Deeply penetrating invaginations of the mucin-secreting columnar epithelium form tubular-branching crypts [termed glands (tbg)], enhancing the secretory function of the endocervical epithelium. | | | The formation of the cervical transformation zone may be associated with a strong noninfectious inflammatory response in the submucosum, epithelial erosions and shallow ulcerations (su), which characterize variable degrees of noninfectious cervicitis. |
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http://www.medscape.com/content/2003/00/44/98/449876/449876_fig.html
(852 words)
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| | EPITHELIA |
| | Epithelial cancers become much more dangerous once they break through the basal lamina, so this boundary is of great clinical importance. | | | The epithelium facing the lumen of the esophagus is an example of a stratified squamous epithelium. | | | There are times when we will see abrupt transitions from one type of epithelium to another, but this is usually at a change of tissue/organ, such as the transition from esophagus into stomach. |
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http://medocs.ucdavis.edu/CHA/402/labsyl/01/02.htm
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| | 2740 EPITHELIAL TISSUES |
| | Locations: This is a respiratory epithelium being found in such places as the nasal septum, trachea, and bronchi. | | | This piece of frog skin allows us to observe the irregular shape of and close knit nature of the cells that make up simple squamous epithelial tissue. | | | These cells come off the stratified squamous epithelial tissue on the inner surface of the cheek. |
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http://www.unomaha.edu/hpa/2740epithelium.html
(553 words)
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| | Stratified squamous keratinized epithelium |
| | If we just want to look at stratified squamous keratinized epithelium, we look at skin from one of the few areas of the body that does not have hair. | | | This tissue is from the palm of the hand (palmar skin). | | | Although stratified squamous keratinized epithelium covers the entire surface of the body, most of it also includes hair, which makes the basic tissue structure harder to see. |
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http://www.austin.cc.tx.us/histologyhelp/tissues/tg_stra_sq_ker_e.html
(361 words)
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| | Epithelial Tissue |
| | This epithelium is called mesothelium (as it is derived from mesoderm) when it is found in certain locations within the body. | | | This type of epithelium is thicker than simple simple squamous epithelium, so it does not allow for passive diffusion as readily. | | | Epithelial tissues come in three basic types: squamous, cuboidal and columnar. |
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http://www.uoguelph.ca/zoology/devobio/210labs/epithelial1.html
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| | STRATIFIED SQUAMOUS EPITHELIUM |
| | Another example of stratified squamous epithelium is found in the skin. | | | What is the major function of this type of epithelium? | | | Can you define the basal and apical layers of this epithelium? |
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http://cellbio.utmb.edu/microanatomy/epithelia/stratified_squamous.htm
(138 words)
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| | Holistic Health Encyclopedia - L |
| | These changes are followed by a squamous metaplasia. | | | Its histogenesis may be related to chronic inflammation and injury of the bronchial epithelium, which leads to replacement of the normal ciliated columnar epithelium by a squamous epithelium. | | | Squamous cell carcinoma is a common form of lung cancer, accounting for approximately one-third of all cases of bronchogenic carcinomas. |
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http://www.findhealer.com/glossary/L.php3
(6915 words)
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| | Simple Squamous Epithelium |
| | This slide shows a section of frog skin. | | | The outermost portion of this skin is composed of a single layer of irregularly-shaped, flat (squamous) cells, which gives the tissue its name. |
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http://bioweb.uwlax.edu/zoolab/Table_of_Contents/Lab-1b/Simple_Squamous_Epithelium/simple_squamous_epithelium.htm
(64 words)
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| | [No title] |
| | The following Kodachrome slides are intended to help you recognize these structures in your class slides today. | | | The epithelium seen here represents the epidermal layer of skin. | | | The endocrine portion, seen here as the light-staining central area, is called the islet of Langerhans, while the darker-staining peripheral areas represent the serous cells of the exocrine portion of the pancreas. |
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http://www.georgetown.edu/dml/educ/micro/epith/epith.txt
(1411 words)
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| | [No title] |
| | What does this structure look like at the | | | of the trachea is an especially good example of this type of epithelium. | | | At first glance, this epithelium may look like stratified squamous |
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http://www.urmc.rochester.edu/smded/Histology/Manuals/Epithelium.html
(1126 words)
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| | Urologic Pathology: Squamous Metaplasia |
| | This refers to those cases in which the urothelium changes to squamous epithelium [74]. | | | Metaplastic squamous epithelium is commonly seen in a setting of chronic irritation such as stones, diverticula, nonfunctioning bladders, or schistosomiasis. | | | Keratinizing squamous metaplasia (leukoplakia) constitutes a significant risk factor for the development of carcinoma, and most squamous cell carcinomas of the bladder arise from areas of keratinizing squamous metaplasia. |
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http://www.afip.org/cgi-bin/edu/coursepage.pl?code=1&id=63
(99 words)
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| | Histology Syllabus: Oral and Nasal Cavities |
| | The connective tissue of the pharynx is fibroelastic surrounded by striated muscle of the pharyngeal muscles. | | | The epithelium throughout is stratified squamous, but may be keratinized or nonkeratinized depending on location and function. | | | Crypts (cleft like depressions between lymphoid nodules) are covered with extensions of surface epithelium which may be invaded by lymphocytes. |
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http://medic.med.uth.tmc.edu/edprog/00000681.htm
(1433 words)
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| | Immunohistochemical localization or glutathione S-transferase alpha and pi in human esophageal squamous epithelium, ... |
| | High tissue levels of glutathione S-transferases (GSTs), a family of detoxification enzymes, are inversely correlated with cancer risk in the human gastrointestinal tract, Patients with Barrett's esophagus, wherein squamous epithelium is replaced by columnar epithelium, have an increased risk for developing esophageal adenocarcinoma. | | | The varying expression of GST alpha and pi in normal and (pre)neoplastic esophagus may have consequences for the treatment of these diseases and may contribute to an understanding of the development of these esophageal disorders. | | | No portion of this data may be reproduced or transmitted in any form or by any means without prior written permission of the publisher." |
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http://www.gerd.com/articles/recent/abstracts/1817.htm
(224 words)
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| | Introduction to Colposcopy |
| | This is generally felt to be safe even if dysplasia or cancer is present because the duration of therapy is short and these lesions do not express any more estrogen receptors than a normal cervix. | | | The physiologic, normal process whereby columnar epithelium matures into squamous epithelium. | | | Generally, a clinically visible line seen on the ectocervix or within the distal canal (e.g., post-cryotherapy), which demarcates endocervical tissue from squamous (or squamous metaplastic tissue). |
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http://lib-sh.lsuhsc.edu/fammed/atlases/colpoat.html
(1874 words)
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| | Virtual Hospital: Lung Tumors: Squamous Cell Carcinoma |
| | Despite the fact that squamous cell carcinomas are rare in the periphery, they can cause a characteristic radiographical and clinical syndrome.They are the most common cause of the Pancoast or superior sulcus syndrome. | | | Adjacent lung parenchyma may be firm and yellow-gray, which is suggestive of a post-obstructive pneumonia.Chronic bronchitis and centriacinar emphysema are also frequently seen in conjunction with squamous cell carcinomas. | | | Larger tumors often outgrow their vascular supply and may have central areas of hemorrhage, necrosis or cavitation.Necrotic areas tend to appear yellow and friable.Cavitation results from the central necrosis, and is seen in about 10% of all cases.Squamous cell carcinomas are the bronchogenic carcinomas most likely to cavitate. |
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http://www.vh.org/adult/provider/radiology/LungTumors/PathologicTypes/Text/Squamous.html
(268 words)
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| | Stratified Squamous |
| | This is the corneal epithelium which consists of 4 - 6 rows of non - papillated stratified squamous epithelium. | | | That plays an important role in vision which you will learn later. | | | This will help you later in the course. |
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http://www3.umdnj.edu/histsweb/lab2/lab2stratifiedsquamous.html
(572 words)
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| | Stratified squamous non-keratinized epithelium |
| | This is called sloughing (pronounced "sluffing") and is a normal process in epithelial tissues that form coverings and linings, especially the stratified tissues. | | | Notice that two of the cells seem to be separating from the surface of the tissue. | | | At this magnification you can't see any of the individual cells, but you can look for a pattern in the nuclei of the cells in the epithelium. |
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http://www.austin.cc.tx.us/histologyhelp/tissues/tf_strat_sq_nk_e.html
(368 words)
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| | Transitional Epithelium |
| | You may be able to observe regions that contain both the domed and stretched forms of this tissue. | | | Contrast the cytomorphosis (change in shape and appearance of cells from the base of the epithelium to its surface) in this type of epithelium with that occurring in typical stratified squamous epithelium (in the following section). | | | Transitional epithelium is usually not more than 3-8 layers deep. |
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http://www3.umdnj.edu/histsweb/lab2/lab2transitional.html
(333 words)
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| | BIOLOGY 2401 |
| | A simple squamous epithelium would most likely be found in | | | A simple columnar epithelium would most likely be found in the | | | The most widely distributed connective tissue in the body is |
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http://www.accd.edu/SAC/biology/ratorres/Tests/SMB2401Test2.htm
(1997 words)
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| | Squamous Metaplasia of the Uterus |
| | • Initially little maturation of the squamous epithelium is seen but this changes over time into the typical stratified non-keratinizing pattern as the cytoplasm in these cells develops. | | | • Epithelium in between derived from squamous metaplasia. | | | • Appropriate stimulus triggers squamous rather than glandular differentation from the basal cells., |
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http://radiology.uchc.edu/eAtlas/GYN/1926.htm
(195 words)
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| | Cross section of the esophagous |
| | Thus, although the deeper and basal layers are composed of cuboidal and sometimes even columnar cells, those cells at the surface are squamous (flat) in shape, giving the tissue its name. | | | By convention, stratified epithelial tissues are named by the shape of their outermost cells. | | | This slide shows a cross section of the esophagus, the first portion of the digestive tract that leads to the stomach. |
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http://bioweb.uwlax.edu/zoolab/Table_of_Contents/Lab-1b/Cross_section_of_the_esophagou/cross_section_of_the_esophagou.htm
(110 words)
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| | AllRefer Health - Cervical Erosion (Cervical Ulceration) |
| | The normal tissue on the surface of the cervix and/or around the os (mouth of the cervix), is replaced by inflamed tissue from within the cervical canal. | | | Cervical erosion is a partial or complete absence of the squamous epithelium (surface) of the cervix. |
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http://health.allrefer.com/health/cervical-erosion-info.html
(365 words)
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| | Squamous epithelium - definition of Squamous epithelium in Encyclopedia |
| | The squamous epithelium is epithelium consisting of one or more cell layers, the most superficial of which is composed of flat, scalelike or platelike cells. | | | Embed a dictionary search in your own web page | | | Squamous epithelium - definition of Squamous epithelium in Encyclopedia |
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http://encyclopedia.laborlawtalk.com/Squamous_epithelium
(62 words)
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| | MedlinePlus Medical Encyclopedia: Nabothian cyst |
| | These endocervical glands can become covered by squamous epithelium in a process called metaplasia. | | | These nests of glandular cells (nabothian glands) on the cervix may become filled with secretions. | | | The cervical canal is lined by glandular cells that normally secrete mucus. |
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http://www.nlm.nih.gov/medlineplus/ency/article/001514.htm
(376 words)
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| | Female Genital Pathology |
| | The squamous cells show maturation from basal layer to surface. |
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http://www-medlib.med.utah.edu/WebPath/FEMHTML/FEM003.html
(10 words)
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| | Epithelium |
| | Right click on any image to see the option of saving to your computer - just remember where you stored the file! | | | cross section, simple squamous and simple cuboidal epithelium |
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http://science.tjc.edu/images/histology/epithelium.htm
(97 words)
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