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Thyroid Gland - C Cell Hyperplasia - Gallery

Image of C cell hyperplasia in the thyroid gland from a female F344/N rat in a chronic study
Thyroid gland, C cell - Hyperplasia in a treated female F344 rat from a chronic study. Aggregates and small nests of C cells have replaced follicles in this thyroid gland.
Image of C cell hyperplasia in the thyroid gland from a female F344/N rat in a chronic study
Thyroid gland, C cell - Hyperplasia in a treated female F344 rat from a chronic study. Higher magnification of Figure 1 shows the contiguous nests of C cells surrounding small follicles.
Image of C cell hyperplasia in the thyroid gland from a male F344/N rat in a chronic study
Thyroid gland, C cell - Hyperplasia in a control male F344 rat from a chronic study. A focal proliferation of C cells is present in this thyroid gland (arrow).
Image of C cell hyperplasia in the thyroid gland from a male F344/N rat in a chronic study
Thyroid gland, C cell - Hyperplasia in a control male F344 rat from a chronic study. Higher magnification of Figure 3 shows illustrates the high nuclear-to-cytoplasmic ratio in this focal proliferation of C cells.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.