Pigment cells are cells in our body that give color to our skin, hair, and eyes. They produce a substance called pigment which determines the shade or color of these body parts. Full definition
This trait involves a massive expansion of pigment cells that not only makes the skin and comb black but also causes black internal organs. (scilifelab.se)
Taking samples from the back, belly, and side of the fossil skin, the team found different numbers of the three pigment cells at each location. (sciencemag.org)
These tumors occur primarily on the skin but may also arise in other tissues where pigment cells are found. (aafp.org)