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Processing and characterization of canine mixed mammary tumor using transmission electron microscopy.

08:00 EDT 11th August 2017 | BioPortfolio

Summary of "Processing and characterization of canine mixed mammary tumor using transmission electron microscopy."

Canine mammary gland tumors represent the second most frequent type of neoplasm in dogs, being an important problem within veterinary medical field. Canine mixed mammary tumors are the most common; the use of a transmission electron microscope (TEM) can contribute as a tool in its diagnosis by determining the characteristics of cellular components from numerous neoplasms. The aim of this study was to characterize cytologically canine mammary mixed tumor by the use of the TEM. A biopsy collected from an 11 years old bitch Shih-Tzu and analyzed by histopathology was used for ultrastructural analysis. Specimens obtained were double stained using uranyl acetate and lead citrate prior to observation in the TEM. The protocol established to transmission electron microscopy observation allowed the identification of main cellular characteristics of canine mixed mammary tumors; however, it was not possible a detailed visualization of the organelles due to the preservation of the biopsy in formaldehyde.

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Name: Microscopy research and technique
ISSN: 1097-0029
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Medical and Biotech [MESH] Definitions

Endogenous superantigens responsible for inducing strong proliferative responses in T-cells in mixed lymphocyte reactions (see LYMPHOCYTE CULTURE TEST, MIXED). They are encoded by mouse mammary tumor viruses that have integrated into the germ line as DNA proviruses (MINOR LYMPHOCYTE STIMULATORY LOCI).

Genetic loci responsible for the encoding of minor lymphocyte stimulatory antigens. There are at least two unlinked loci (in the mouse) and they appear to be separate from the MAJOR HISTOCOMPATIBILITY COMPLEX and MINOR HISTOCOMPATIBILITY LOCI. The mouse mammary tumor virus (see MAMMARY TUMOR VIRUS, MOUSE) has the ability to integrate into these loci. The antigens induce strong T-cell proliferative responses in mixed lymphocyte reactions.

A contagious disease caused by canine adenovirus (ADENOVIRUSES, CANINE) infecting the LIVER, the EYE, the KIDNEY, and other organs in dogs, other canids, and bears. Symptoms include FEVER; EDEMA; VOMITING; and DIARRHEA.

The type species of BETARETROVIRUS commonly latent in mice. It causes mammary adenocarcinoma in a genetically susceptible strain of mice when the appropriate hormonal influences operate.

A tumor, basically a carcinoma with a single sarcoma such as leiomyosarcoma or angiosarcoma or multiple sarcomas of uterine origin. The role of estrogen has been postulated as a possible etiological factor in this tumor. (Holland et al., Cancer Medicine, 3d ed, p1703)

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