Endocrine System

Thyroid Gland, Follicle - Pigment

    Narrative
    Thyroid gland, Follicle - Pigment in a male F344/N rat from a subchronic study. Dense pigment deposits are present in the follicular epithelium and colloid.
    Thyroid gland, Follicle - Pigment in a male F344/N rat from a subchronic study. Higher magnification of the pigment deposits in the follicular epithelium colloid in Figure 1.
    Thyroid gland, Follicle - Pigment in a male F344/N rat from a chronic study. Fine, brown, granular pigment is present within the follicular epithelium.
    Thyroid gland, Follicle - Pigment in a male F344/N rat from a chronic study. Fine, granular, brown pigment is present within the follicular epithelium.

    Authors

    Robert R. Maronpot, DVM, MS, MPH, DACVP, DABT, FIATP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Amy Brix, DVM, PhD, DACVP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Reviewers

    Thomas J. Rosol, DVM, PhD, DACVP
    Professor of Veterinary Biosciences
    Senior Advisor, Life Sciences, Technology Commercialization and Knowledge Transfer
    The Ohio State University
    Columbus, OH

    Susan A. Elmore, MS, DVM, DACVP, DABT, FIATP
    Staff Scientist, NTP Pathologist
    NTP Pathology Group
    National Toxicology Program
    National Institute of Environmental Health Sciences
    Research Triangle Park, NC