Histology Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Histology and links to relevant pages within the course.
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| Which one of the following statements about Coxiella burnetii is not true: | View Page |
| Histology of Brain Biopsy The H & E section of the brain biopsy (left frame)revealed edema of the parencymya with the accumulation of inflammatory cells in the perivascular spaces. The close in view of the exudate (right) frame reveals that the inflammatory exudate is comprised primarily of polymorphonuclear luekocytes. The histologic diagnosis therefore is suppurative meningitis, with culture results necessary to establish the etiologic agent. | View Page |
| Direct Nucleic Acid Tests Southern Blot: Employs a restriction endonuclease enzyme to extract DNA from the cells. DNA detection is done using agarose gel electrophoresis.Fluorescent In Situ Hybridization (FISH): Uses RNA Northern Blot or DNA Southern Blot techniques to detect targets of interest in cytology/histology specimens or other nucleic acid variations. DNA fingerprinting: Restriction Fragment Length Polymorphism (RFLP): Cuts long DNA into shorter fragments before detection to isolate changes or polymorphisms. These can either be detected by Southern Blot or by Polymerase Chain Reaction (PCR). | View Page |
| Description of Specialties (3) Specialists in radioassay use radionuclides to determine the chemical makeup of body fluids such as blood and urine.
Specialists in blood gas analysis evaluate lung and breathing function by levels of oxygen, carbon dioxide, pH, and hemoglobin with automated tests.
Specialists in histology examine cellular and tissue samples using fixation, dehydration, embedding, microtomy, frozen sectioning, staining, and other similar techniques. Histology specialists licensed as technicians can perform specimen processing, embedding, cutting, staining, and frozen sectioning only under the general supervision of a director, supervisor, or technologist.
Specialists in cytology process and interpret samples relating cytopathological disease. Non-gynecological cytology preparations can be screen by a specialist in cytology but final review and interpretation must be done by a physician. | View Page |
| Clinical laboratory personnel who are licensed in the specialties of immunohematology, clinical chemistry, hematology, and serology / immunology may perform testing in the specialty of blood banking. | View Page |
| Where is Formaldehyde Used? Formaldehyde is a preservative, ideally used in:
Histology laboratories
Autopsy laboratories
Surgical pathology
Anywhere biopsies are performed
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| Where is Formaldehyde Used? Formaldehyde is used to preserve tissue that is removed during surgery, endoscopy and autopsies. It is therefore found in surgery suites, endoscopy suites, surgical pathology areas, histology areas, and anywhere else that tissue needs to be preserved for processing. | View Page |
| What is Formaldehyde? Formaldehyde solution is a colorless, aqueous liquid with a pungent odor. Concentrated formaldehyde solutions contain not less than 37% of formaldehyde or CH2O. These are usually supplied in 55 gallon drums. Ten percent (10%) aqueous formaldehyde solution, known as formalin , is almost universally used in the histology laboratory to fix and store pathology specimens, and, while still an important potential health hazard, is safer to use because of its lower formaldehyde concentration. | View Page |