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- W4200326377 abstract "Normal mammary gland development may be altered by exposure to environmental toxicants and pharmaceutical products, excessive exposure to hormones, and genetic alterations. Mammary gland whole mounts are an inexpensive method to capture the progression of morphological changes that may arise after exposure. However, in later life, when abnormalities are more prone to develop, sole reliance on this one method may not always provide enough information to make a proper diagnosis of the abnormality. Historically, in chemical test guideline studies, a single mammary gland is removed at necropsy and prepared as a hematoxylin and eosin (H&E)-stained section. The incorporation of contralateral mammary whole-mount collection and analysis decreases the likelihood of a false-negative assessment. Evaluation of the whole mount is limited by the presence of one or two entire mammary glands on a slide, and in some cases, the abnormalities observed in the whole mount are not uniformly represented in the H&E section. The goal of this study was to develop a protocol for converting coverslipped mammary whole mounts to H&E-stained sections so that lesions that would otherwise have been missed or that are difficult to diagnose can be identified. Here, we detail a method to produce a high-quality, paraffin-embedded H&E section from a mammary gland that was initially prepared as a whole mount. In comparison to a tissue that was intentionally prepared for H&E sectioning, the whole mount requires additional preparation for tissue removal and processing. However, this method is considered inexpensive, as it requires common lab reagents and little additional time. As a result, this method can provide invaluable information on how chemical and environmental exposures alter normal mammary development, as well as display changes that occur because of genetic modifications." @default.
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- W4200326377 date "2017-07-24" @default.
- W4200326377 modified "2023-09-26" @default.
- W4200326377 title "Sectioning Mammary Gland Whole Mounts for Lesion Identification" @default.
- W4200326377 doi "https://doi.org/10.3791/55796-v" @default.
- W4200326377 hasPublicationYear "2017" @default.
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