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Harderian Gland - Pigment - Gallery

Image of pigment in the Harderian gland from a female F344/N rat in a subchronic study
Harderian gland - Pigment in a female F344/N rat from a subchronic study. There are golden to dark brown amorphous clumps or laminated concretions of pigment (likely porphyrin) in the acinar lumens (arrow).
Image of pigment in the Harderian gland from a female F344/N rat in a subchronic study
Harderian gland - Pigment in a female F344/N rat from a subchronic study (higher magnification of Figure 1). This higher magnification image shows the intra-acinar pigment in greater detail.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.