COVID-19 is an emerging, rapidly evolving situation.

Get the latest public health information from CDC and research information from NIH.

U.S. flag

An official website of the United States government

Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Share This:

DNTP Pathology Dictionary 2019-2021

The Division of the National Toxicology Program (DNTP) has been collecting and reporting histopathology and clinical pathology data since 1976. Over the years, pathology terminologies have evolved. This dictionary includes legacy terms and their current equivalent, and mappings to external ontologies. This dictionary is currently in progress and under review (Version: November 2021)

DNTP Legacy Gross Pathology and Histopathology Mapping to DNTP Standard Term

DNTP Histopathology Standard Term with Link to Ontology

DNTP Clinical Pathology Standard Term with Link to Ontology