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Your Environment. Your Health.

Training and Visual Guides

NIEHS provides the following Visual Guides as resources to scientists.

The Digitized Atlas of Mouse Liver Lesions

The Atlas provides hundreds of color photographs and slides of various types of rodent liver lesions. Readers can search by both subject and by pathology.

Global Toxicologic Pathology Training Program

The NIEHS Division of the National Toxicology Program (DNTP) promotes the development and application of novel scientific tools and approaches that help researchers, regulators, and the public better understand how environmental agents can affect human health. In addition, the organization aims to support the next generation of innovative leaders in the field of toxicology by offering education and training opportunities to scientists.

Mouse & Rat Embedding Suggestions

These images provide suggestions to scientists in the form of detailed illustrations, photos, interactive guides, and suggestions. These suggestions cover both rat and mouse tissues.

NTP Nonneoplastic Lesion Atlas

The National Toxicology Program (NTP) is pleased to bring to you a new searchable, web-based resource containing thousands of high quality images and guidelines for diagnosis of nonneoplastic lesions in experimental rodent models. The Atlas will be used by NTP and its many pathology partners to standardize rat and mouse lesion diagnosis, terminology and the way lesions are recorded. This is a must-have resource for every pathologist.

Revised Guides for Organ Sampling and Trimming in Rats and Mice

This guide provides organ sampling and trimming guides to scientists in the form of detailed illustrations and photos. These guides cover both rats and mice.

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