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Animal Health Diagnostic Laboratory - Expertise
The AHDL consists of three laboratories supporting six diagnostic areas:
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
Viral serology: THE AHDL has the capability to detect viral and mycoplasmal
antibody utilizing traditional and modern techniques, including HI, ELISA, and IFA tests.
The AHDL utilizes an independent commercial laboratory for confirmation of unusual test
results. |
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
Bacteriology: Several culture methods are employed to identify pathogenic
organisms appropriate to the animal species. The laboratory has the capabilities to
provide more sophisticated culture techniques for clinical cases, including anaerobic and
special gas environments, phase microscopy, and serological typing. |
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
Parasitology: Both direct examination of the animal and microscopic examination
of hair, anal tapes, fecal floats, and intestinal scrapings for the presence of ecto- and
endoparasites are employed. |
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
MAP/RAP testing: All biological material, i.e., tumors, cell cultures, ascitic
fluids, and tissues, must first be tested to determine that there is no viral contamination
before they may be utilized in animals. Virus antibody-free animals are inoculated with
the test material and antibody levels are measured three weeks later with standard
serological methods. Lactic Dehydrogenase (LDHV) virus contamination is detected by
measuring elevated LDH levels post-inoculation of LDHV-free animals. |
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
Molecular diagnostics: The laboratory has developed and validated PCR-based
assays for a number of murine viral and bacterial pathogens. Currently, the PCR-based
assays are utilized in conjunction with traditionally based assays. This allows the AHDL to
utilize two independent approaches to health monitoring. New assays for various rodent
pathogens are constantly being developed and enhanced. |
![](https://webarchive.library.unt.edu/eot2008/20090118054722im_/http://www.ncifcrf.gov/images/bullet_blue.gif) |
Necropsy: Necropsy of small species (i.e., rodents, rabbits, etc.) for routine
and clinical health evaluations are conducted. Necropsies involve the direct examination
and collection of various materials for serological, bacteriological, parasitological, and
molecular tests as outlined above. Examination and collection of various tissues and organs
for histopathological evidence of disease are supported by the
Pathology/Histotechnology Laboratory, which has the capabilities of
H&E, special, and IFA stains. Clinical and other cases which require immediate attention
are given priority and are rapidly reported with verbal and faxed communication. |
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