of a histologic specimen of human lung tissue stained with hematoxylin and eosin . Histology compound ... of histological stains. Histology is an essential tool of biology and medicine . Histopathology , the microscopic ..., histology technicians HT , histology technologists HTL , medical scientists, Medical Laboratory ... histotechnology. Histology Fixing Chemical fixation with formaldehyde or other chemicals main Fixation histology Chemical fixatives are used to preserve tissue from degradation, and to maintain the structure ... way to fix and mount histology sections. It is used in surgical removal of tumors , and allow ... used light microscopical stain in histology and histopathology. Hematoxylin, a Base chemistry ... hemochromatosis . Histology samples have often been examined by radioactive techniques. In historadiography ... Histology A Text and Atlas publisher Lippincott Williams & Wilkins location Hagerstown, MD year ... possibly be seen with the electron microscope . History In the 19th century, histology .... 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 that have being introduced ... and freckles melanin in skin samples. Post histology Artifacts can result from tissue processing. Processing ... in a laboratory the majority of post histology artifacts can be avoided or removed after ... a section. See also Portal box Medicine http meyershistology.moodle.com.au Meyer s Histology a complete online histology course http histology online.com Histology online Anatomical pathology Automated ... List of publications in biology Histology Important publications in histology Arthur Ham Arthur Worth Ham and David H. Cormack s Histology , for example Laser capture microdissection Pathology Notes reflist References Meyer s Histology a complete online histology course 2012 . http meyershistology.moodle.com.au ... 01 26. 4,000 online histology images 2007 . http histology online.com External links commons category ... 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 Category Staining 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 Lacunae are situated between the lamellae zoology lamellae , 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 lacunae 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, thereby preventing 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 particularly proteolysis proteolytic enzyme s 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 morphology ... the most commonly used fixative in histology is formaldehyde . It is usually used as a 10 Neutral ... Histology Category Pathology Category Histology cs Fixace vzorku de Fixierung Pr parationsmethode ... 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. Histoanatomy 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
Effacement is the shortening, or thinning, of a tissue. It can refer to cervical effacement . It can also refer to a process occurring in podocyte s, for example in minimal change disease . ref name pmid18922801 cite journal author Wagner MC, Rhodes G, Wang E, et al. title Ischemic injury to kidney induces glomerular podocyte effacement and dissociation of slit diaphragm proteins Neph1 and ZO 1 journal J. Biol. Chem. volume 283 issue 51 pages 35579 89 year 2008 month December pmid 18922801 pmc 2602882 doi 10.1074 jbc.M805507200 url ref In histopathology , it refers to the near obliteration of a tissue, as in the normal parenchyma of tissues in the case of some cancers. References reflist biology stub Category Tissues ... more details
Wiktionary Effacement may refer to Histology Effacement histology , the shortening, or thinning, of a tissue. Cervical effacement , the thinning of the cervix. Paleontology Trilobite Evolutionary trends Effacement , an evolutionary trend resulting in the loss of surface detail in trilobites. disambig ... 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
Acid fuchsin is an acidic dye that has wide usage in histology. 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
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 Adipocytes also have an external lamina References reflist Category Skin anatomy Category Histology med stub ... 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
A trichrome stain is a stain including three colored components. See trichrome article for more information. Types include G m ri trichrome stain Lillie s trichrome Masson s trichrome stain biochem stub Stains Category Histology Category Staining ... more details
Mucous connective tissue or mucous tissue is a type of connective tissue found during fetal development. It is composed mainly of ground substance with few cells or fibers. It can also be referred to a group of mucoproteins found in certain types of cysts, etc. resembling mucus. It is most easily found as a component of Wharton s jelly . It forms the umbilical cord . ref name isbn0 7817 8577 4 cite book author Strum, Judy M. Gartner, Leslie P. Hiatt, James L. title Cell biology and histology publisher Lippincott Williams & Wilkins location Hagerstwon, MD year 2007 isbn 0 7817 8577 4 oclc doi accessdate page 83 ref It is sometimes considered equivalent to mesenchymal connective tissue . ref name urlBlue Histology Connective Tissues cite web url http www.lab.anhb.uwa.edu.au mb140 CorePages Connective Connect.htm mesenchymal title Blue Histology Connective Tissues format work accessdate 2008 12 05 ref The vitreous of the eyeball is a similar tissue. ref cite book title Textbook of Human Histology With Colour Atlas first Inderbir last Singh publisher Jaypee Brothers Medical Publishers isbn 978 8171799671 date April 15, 2007 page page needed date September 2010 nopp yes ref See also mucus Mucous References reflist External links eMedicineDictionary Mucous connective tissue http meded.ucsd.edu hist img bank chapter 1 Slide 7 umbilical index.htm Histology at ucsd.edu Connective tissue Category Tissues developmental biology stub pl Tkanka czna galaretowata ... more details
Unreferenced date December 2009 Image Basophil.jpg thumb A Basophil granulocyte stains dark purple 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 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
Image Cholesterol embolus very high mag.jpg thumb Micrograph showing the internal elastic lamina thin pink wavy line image edge mid left to image edge bottom centre left . H&E stain . 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 Angiology circulatory stub ... more details
HGV may mean Large goods vehicle , A goods vehicles of over 3,500kg, which is still often referred to in the UK as an HGV or Heavy Goods Vehicle. GB virus C , otherwise known as Hepatitis G virus Histology Group of Victoria Incorporated HGV Video Productions , a Canadian home video distributor disambig de HGV ... more details
Arthur Worth Ham 20 February 1902 &ndash 6 September 1992 was a prominent Canada Canadian histology histologist . His textbook Histology is considered by many practitioners an indispensable reference. Early life, education, and tennis Ham s early education came through Brantford Collegiate Institute and Vocational School. He followed with a medical degree MB from the University of Toronto which he completed in 1927. In 1925, Ham married Dorothy Carlotta Ross. While interning at the Wellesley Hospital, Ham also pursued an active tennis career. In 1928 and 1929, he doubles played for Canada Davis Cup team Canada s Davis Cup team , partnering Jack Wright tennis Jack Wright . In 28 he and Wright lost 10 8 in the fifth set to the Japanese duo of Tamimo Abe and Teizo Toba , as Japan prevailed in this America Zone semi final tie, 3 1. In 1929, Ham and Wright lost to the American team of John F. Hennessey and John Van Ryn , 1 6, 1 6, 6 1, 2 6. Canada lost this tie as well, an America Zone first round encounter, 0 5. Histology In the early 1930s, Ham published his first series of major papers on the formation, maintenance, and destruction of bone within the body. The study of bone would be a theme to which Ham would return throughout his career. The first edition of Ham s seminal histology text&ndash titled simply Histology &ndash was published in 1950. Late career In 1951, Ham was elected a Fellow of the Royal Society of Canada . Along with Harold E. Johns , Ham played a key role in the formation of the Department of Medical Biophysics at the University of Toronto. He served as the Department ... was widowed once again in 1988. The ninth edition of Histology &ndash known almost universally as Ham s Histology &ndash was published in 1987 by Ham jointly with David H. Cormack, Ph.D. References ... Lippincott 1943. Ham, A.W. and Cormack, D.H. u Ham s Histology, 9th ed. u . Philadelphia Lippincott ... Category Canadian male tennis players Category Histology Category People from Brantford Category ... more details
Orphan date February 2009 The bone collar is a cuff of periosteal bone that forms around the diaphysis of the hyaline cartilage model in developing long bones. ref Wheater s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath. ref reflist med stub Category Skeletal system ... more details
Orphan date February 2009 An isogenous group lat. equal origin is a cluster of chondrocytes , all formed through division of a single progenitor cell, found in hyaline cartilage growing by interstitial growth . ref Wheater s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath. ref References reflist Category Connective tissue cells med stub ... more details
Orphan date February 2009 Layer which surrounds chondrocytes in cartilage . It is basophilic , and stains metachromatic ally due to proteoglycans . ref Wheater s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath. ref Reflist Med stub Category Skeletal system Category Tissues ... more details
Encyclopedia
top
