of human lung tissue stained with hematoxylin and eosin . Histology compound of the Greek language ... structures is frequently enhanced through the use of histological stains. Histology is an essential ... the preparation of histological sections are histotechnicians, histology technicians HT , histology ... , or biomedical scientist s. Their field of study is called histotechnology. Histology Fixing Chemical fixation with formaldehyde or other chemicals main Fixation histology Chemical fixatives are used ... Frozen section is a rapid way to fix and mount histology sections. It is used in surgical removal ... is the most commonly used light microscopical stain in histology and histopathology. Hematoxylin ... in diseases like hemochromatosis . Histology samples have often been examined by radioactive techniques ... H. Ross, Wojciech Pawlina, title Histology A Text and Atlas publisher Lippincott Williams & Wilkins ... In the 19th century, histology was an academic discipline in its own right. The 1906 Nobel Prize in Physiology ... come from outside sources. Artifacts interfere with histology by changing the tissues appearance and hiding structures. These can be divided into two categories Pre histology These are features and structures ... ink from tattoos and freckles melanin in skin samples. Post histology Artifacts can result ... in the tissue. Because these are caused in a laboratory the majority of post histology artifacts ... of publications in biology Histology Important publications in histology Geoffrey Bourne anatomist Geoffrey ... histology images 2007 . http histology online.com External links commons cat Histology http www.ihcworld.com protocol database.htm Histology Protocols http www.kumc.edu instruction medicine anatomy histoweb Histoweb http www.siumed.edu 7Edking2 index.htm SIU SOM Histology http www.visualhistology.com Visual Histology Atlas Visual Histology Atlas http www.histology world.com glossary glossary1.htm Histology Glossary http www.hgv.org.au Histology Group of Victoria Incorporated http www.histology ... more details
image myelolipoma cut surface.jpg thumb The cut surface of an adrenal myelolipoma shows colour variegation from yellow to red to brown depending on the distribution of fat, blood and myeloid elements In histology , variegation is the property of having discrete markings of different colors. ref http www.merriam webster.com dictionary variegated Variegated From Merriam Webster Online Dictionary. Retrieved June 29, 2010 ref References Reflist Medicine stub Category Histology ... more details
Unreferenced date July 2008 An acidophile or acidophil , or, as an adjectival form, acidophilic describes is a term used by histologist s to describe a particular staining pattern of cells and tissues when using haematoxylin and eosin stains. Specifically, the name refers to structures which love acid, and take it up readily. It describes the microscopic appearance of cell biology cell s and Biological tissue tissue s, as seen down the microscope , after a histological section has been stained with an acidic dye . The most common such dye is eosin , which stains acidophilic organisms red and is the source of the related term eosinophilic . See also Anterior pituitary acidophil Basophilic Oxyphil cell Eosinophil granulocyte Stains Please name category Category Histology biology stub ar pt Acidof lico ... more details
Infobox Anatomy Name Lacuna histology Latin GraySubject 18 GrayPage 90 Image Gray74.png Caption Section parallel to the surface from the body of the femur . X 100. a, Haversian canals b, lacunae seen from the side c, others seen from the surface in lamella zoology lamella , which are cut horizontally. Image2 Gray76.png Caption2 Nucleated bone cells and their processes, contained in the bone lacun and their canaliculus bone canaliculi respectively. From a section through the vertebra of an adult mouse . System MeshName MeshNumber DorlandsPre l 01 DorlandsSuf 12475145 In histology , a lacuna is a small space containing an osteocyte in bone or chondrocyte in cartilage. Bone The Lacun are situated between the lamella zoology lamell , and consist of a number of oblong spaces. In an ordinary microscopic section, viewed by transmitted light, they appear as fusiform opaque spots. Each lacuna is occupied during life by a branched cell, termed an osteocyte , bone cell or bone corpuscle. Lacunae are connected to one another by small canals called canaliculus bone canaliculi . A lacuna never contains more than one osteocyte. Cartilage The cartilage cells or chondrocytes are contained in cavities in the matrix, called cartilage lacun around these the matrix is arranged in concentric lines, as if it had been formed in successive portions around the cartilage cells. This constitutes the so called capsule of the space. Each lacuna is generally occupied by a single cell, but during the division of the cells it may contain two, four, or eight cells. Lacunae are found between narrow sheets of calcified matrix that are known as lamellae lah MEL le . External links BiowebUW APlab Table of Contents Lab 05 Bone Model 1 Bone Model 1b bone model 1b.html aplab http www.mansfield.ohio state.edu jbradley BoneModelA.html Photo at ohio state.edu Gray s Bone and cartilage Category Musculoskeletal system musculoskeletal stub cell biology stub ... more details
In the fields of histology , pathology , and cell biology , fixation is a chemical process by which biological tissue s are preserved from decay, either through Autolysis biology autolysis or putrefaction . Fixation terminates any ongoing biochemical reactions, and may also increase the mechanical strength or stability of the treated tissues. Purposes of fixation Fixation of tissue is done for several reasons. One reason is to kill the tissue so that postmortem decay autolysis and putrefaction is prevented. ref name Carson cite book title Histotechnology A Self Instructional Text last Carson first Freida L authorlink coauthors Christa Hladik edition 3 year 2009 publisher American Society for Clinical Pathology Press location Hong Kong isbn 9780891895817 page 2 pages url accessdate ref Fixation preserves a sample of biological material biological tissue tissue or biological cell cells as close to its natural state as possible in the process of preparing tissue for examination. To achieve this, several conditions usually must be met. First, a fixative usually acts to disable intrinsic biomolecules &ndash particularly proteolysis proteolytic enzyme s&mdash which otherwise digests or damages the sample. Second, a fixative typically protects a sample from extrinsic damage. Fixatives are toxic to most common microorganisms bacteria in particular that might exist in a tissue sample or which might otherwise colonise the fixed tissue. In addition, many fixatives chemically alter the fixed material to make it less palatable either indigestible or toxic to opportunistic microorganisms. Finally, fixatives often alter the cells or tissues on a molecular level to increase their mechanical strength or stability. This increased strength and rigidity can help preserve the morphology biology ... additional rigidity to the tissue. By far the most commonly used fixative in histology is formaldehyde ... References reflist DEFAULTSORT Fixation Histology Category Pathology Category Histology cs Fixace vzorku ... more details
in the June 2007 edition of Paraffinalia. External links http www.hgv.org.au Histology Group of Victoria homepage Related Pages Anatomical pathology Histology Histopathology Pathology Staining biology Staining of biological tissue List of publications in biology Histology Publications in Histology ... more details
wikify date August 2009 Histology is the study of the minute structure, composition, and function of tissues. ref Dorland s Medical dictionary Medical Dictionary Abridged 25th ed. . 1980 . Philadelphia, PA The Saunders Press. ref The histology of the vocal folds is the reason for vocal fold vibration. Histoanaomy of the Glottis The glottis is defined as the true vocal folds and the space between them. It is composed of an intermembranous portion or anterior glottis, and an intercartilaginous portion or posterior glottis. The border between the anterior and posterior glottises is defined by an imaginary line drawn across the vocal fold at the tip of the vocal process of the arytenoid cartilage . The anterior glottis is the primary structure of vocal fold vibration for phonation and the posterior glottis is the widest opening between the vocal folds for respiration. Thus, List of voice disorders voice disorders often involve lesions of the anterior glottis. There are gradual changes in stiffness between the pliable vocal fold and hard, Cartilage hyaline cartilage of the arytenoid. The vocal processes of the arytenoid cartilages form a firm framework for the glottis but are made of elastic cartilage at the tip. Therefore, the vocal process of the arytenoid bends at the elastic cartilage portion during adduction and abduction of the vocal folds. Attachments of the Vocal Fold The vibratory portion of the vocal fold in the anterior glottis is connected to the thyroid cartilage anteriorly by the macula flava and anterior commissure tendon, or Broyle s ligament. Posteriorly, this vibratory portion is connected to the vocal process of the arytenoid cartilage by the posterior macula flava. The macula flava in newborn vocal folds is important for the growth and development of the vocal ligament and layered structure of the vocal folds. In the adult, the macula flavae are probably ... See also Reinke s Edema DEFAULTSORT Histology Of The Vocal Folds Category Human throat Category Human ... more details
Description Histology of Sarraceniaceae. A Transverse sect. of pitchered leaf of Sarracenia flava slightly above level of pitcher bottom, fibro vascular system alone shown, p pitcher cavity. B Leaf of Sarracenia purpurea S. purpurea cut open. a attractive lid surface, b smooth conducting surface, c glistening glandular surface, d detentive surface. C Magnified views of last, a attractive surface with glands and hairs, b hair magn., c conducting surface with glands, d epidermal cell from c magn., e glandular surface, f a few cells from e . D Epidermis from pitcher cavity of Heliamphora , a lid surface with attractive glands, b two glands magn., c conducting surface, d smooth zone, e detentive surface. E Glands of Darlingtonia plant Darlingtonia , a section of alluring gland from pitcher exterior, b attractive gland from inner pitcher rim, c sectional view of b . F Nectariferous papillae from outer ovarian wall of S. purpurea . Author John Muirhead Macfarlane Source Macfarlane, J.M. 1908. Sarraceniaceae. In A. Engler Das Pflanzenreich IV , 110, Heft 36 1 91. Permission PD US PD US Category Sarracenia ... more details
Lillie s trichrome is a combination of dyes used in histology . It is similar to Masson s trichrome stain , but it uses Biebrich scarlet for the plasma stain. External links http stainsfile.info StainsFile stain conektv tri lillie.htm Lillie s trichrome at StainsFile.info biochem stub Stains Category Histology Category Staining pt Corante tricromo de Lillie ... more details
Summary Designed by Darlene Deo. Animated by Sean Phefley. For the Histology Group of Victoria Inc. Licensing PD self date November 2006 ... more details
Image Prolymphocyte.png thumb Prolymphocyte Found during lymphocytopoiesis , a prolymphocyte is the immediate precursor of a lymphocyte , derived from a lymphoblast . See also Pluripotential hemopoietic stem cell Prolymphocytic leukemia External links http www.mcl.tulane.edu classware pathology Krause Blood Prolymphocyte.jpg Histology at tulane.edu http www.academic.marist.edu jzmz HematologyI Bloodsmears26.html Histology at marist.edu http www.hematologyatlas.com maturationseq.htm Histology at hematologyatlas.com found in sixth row Immune system Category Immunology Category Lymphocytes Immunology stub Developmental biology stub ... more details
Gnarled enamel is a description of tooth enamel enamel seen in histology histologic sections of a tooth underneath a cusp dentistry cusp . The appearance of enamel appears different and very complex under the cusp, but this is not due to a different arrangement of dental tissues. Instead, the enamel still has the same arrangement of enamel rod s. The strange appearance results from the lines of enamel rods directed vertically under a cusp and from their orientation in a small circumference. References Cate, A.R. Ten. Oral Histology development, structure, and function. 5th ed. 1998. ISBN 0 8151 2952 1. Category Dentistry subjects Category Histology Category Mouth dentistry stub ... more details
Acid Fuchsin is one of the dyes used in Masson s Trichrome Stain . This method is commonly used to stain tissue sections in the Histology Laboratory in order to distinguish muscle from collagen. The muscle stains red with the acid fuchsin, and the collagen is stained green or blue with light green SF yellowish or methyl blue. Formula 1 gm of Acid Fuchsin 1 mL of Glacial acetic acid HOAc 100 mL of Distilled water See also Histology Connective Tissue References Jocelyn H. Bruce Gregorios, M.D. Histopathologic Techniques, JMC Press Inc., Quezon City, Philippines, 1974. ISBN 971 11 0853 4 Category Histology Category Staining no Syrefuksin ... more details
wiktionary A fixative is a stabilizing or preservative agent Fixative drawing Fixation histology , a solution used to preserve or harden fresh tissue of cell specimens for microscopic examination. Fixative perfumery embalming chemicals disambig ... more details
In anatomy and histology , the term wandering cell or ameboid cell ref eMedicineDictionary ameboid cell ref is used to describe cells that are found in connective tissue , but are not fixed in place. ref name urlConnective Tissue Cite web url http www.courseweb.uottawa.ca medicine histology English SS BasicTissues Connective Tissue.htm title Connective Tissue work accessdate 2008 11 27 ref Examples of wandering cells include mast cells and macrophages . ref name urlBlue Histology Connective Tissues Cite web url http www.lab.anhb.uwa.edu.au mb140 CorePages Connective Connect.htm Cells title Blue Histology Connective Tissues format work accessdate 2008 12 05 ref See also Amoeboid References Reflist External links http medinfo.ufl.edu year1 histo glossary.html wandering cell Description at ufl.edu Connective tissue Musculoskeletal stub Cell biology stub Category Connective tissue cells pt C lula ameboide ... more details
Unreferenced date May 2009 Phyloxin is a dye used to staining stain tissue for histology histologic examination. It stains muscle red. See also HOPS stain Category Staining dyes inorganic compound stub ... more details
In the anterior pituitary , the term acidophil is used to describe two different types of cells somatotroph s, which generate somatotropin mammotroph s, which generate prolactin When using standard staining techniques, they cannot be distinguished from each other though they can be distinguished from anterior pituitary basophil basophils and chromophobes ref BUHistology 14002loa ref , and are therefore identified simply as acidophils . See also Acidophile histology Basophilic Oxyphil cell References references Pituitary gland Category Histology ... more details
External lamina is a structure similar to basal lamina that surrounds the sarcolemma of muscle cells. It is secreted by myocytes and consists primarily of Collagen type IV , laminin and perlecan heparan sulfate proteoglycan . Nerve cells, including perineurial cells and Schwann cells also have an external lamina like protective coating. ref Wheater s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath. ref References reflist Category Skin anatomy Category Histology med stub ... more details
Unreferenced date December 2009 Image Basophil.jpg thumb A Basophil granulocyte stains dark blue upon H&E staining. Basophilic is a technical term used by Histology histologists . It describes the microscopic appearance of cell biology cell s and Biological tissue tissue s, as seen down the microscope , after a histological section has been stained with a basic dye . The most common such dye is haematoxylin . Basophilic describes the appearance of structures seen in histological sections which take up basic dyes. The structures usually stained are those that contain nucleic acid such as the cell nucleus and ribosomes . Basophils are cells that love Base chemistry base , and which usually show up deep blue under standard staining techniques H&E . Specifically, this term refers to basophil granulocyte s anterior pituitary basophil s See also Acidophile histology Stains Category Histology nl Basofiel pt Basof lico ... more details
image Enamelorgan11 17 05.jpg right 250px The stellate reticulum is a group of cell biology cells located in the center of the enamel organ of a tooth development developing tooth . These cells are star shaped and synthesize glycosaminoglycan s. As glycosamingoglycans are produced, water is drawn in between the cells and stretch them apart. As they are moved further away from one another, the stellate reticulum maintain contact with one another through desmosome s, resulting in their unique appearance. stellate reticulum is lost after the first layer of dentin is laid down. this brings cells in inner enamel epithelium closer to blood vessels at the periphery References Orbans Oral histology and embryology 10th ed. Cate, A.R. Ten. Oral Histology development, structure, and function. 5th ed. 1998. ISBN 0 8151 2952 1. Ross, Michael H., Gordon I. Kaye, and Wojciech Pawlina. Histology a text and atlas. 4th edition. 2003. ISBN 0 683 30242 6. stellate reticullum dentistry stub Category Tooth development ... more details
Image Cardiac amyloidosis very high mag movat.jpg thumb right 200px Movat s stain showing amyloid brown and fibrosis yellow of the heart. In pathology , the Movat s stain is a staining method in histology that is based on Alcian blue . ref Modified Movat s Pentachrome Stain. University of Pennsylvania. URL http www.med.upenn.edu mcrc histology core movat.shtml http www.med.upenn.edu mcrc histology core movat.shtml . Accessed on 4 December 2009. ref It is used in cardiovascular pathology . Interpretation Black nuclei, elastic fibres Yellow collagen, reticular fibers Blue ground substance, mucin Bright red fibrin Red muscle Additional images gallery Image Myxomatous aortic valve.jpg Movat s stain demonstrating thickening of the spongiosa layer blue in myxomatous degeneration of the aortic valve . gallery References reflist See also Cardiovascular disease pathology stub Stains Category Staining ... more details
The internal elastic lamina or internal elastic lamella is a layer of elastic tissue that forms the outermost part of the tunica intima of blood vessels. It readily visualized with light microscropy in sections of Distributing artery muscular arteries , where it is thick and prominent, and arterioles , where it is slightly less prominent and often incomplete. ref name blue histology http www.lab.anhb.uwa.edu.au mb140 corepages vascular vascular.htm ref It is very thin in veins and venules. ref name blue histology In Conducting artery elastic arteries such as the aorta, which have very regular elastic laminae between layers of smooth muscle cells in their tunica media , the internal elastic lamina is approximately the same thickness as the other elastic laminae that are normally present. ref name ouhsc http www.ouhsc.edu histology text 20sections cardiovascular.html ref References reflist DEFAULTSORT Internal Elastic Lamina Category Cardiovascular system circulatory stub ... more details
Summary Painted by Mikael H ggstr m Information source Basic histology Junqueira & Carneiro, ISBN 0 07 1440917, McGraw Hill Education 2005 User Mortsggah Mortsggah 10 13, 7 December 2006 UTC Licensing PD self date December 2006 ... more details
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