In albinism the cells lack the ability to produce pigment altogether.

Because melanocyte cells continually produce pigment, in theory eye color can be changed.

They do not produce pigment but do have an asexual cycle in the blood.

The species in this family produce pigment and do not have an asexual cycle in the blood.

The skin cells that produce pigment (melanocytes) sometimes group together to form moles.

The mill, Europe's last to produce pigments this way, has opened its gates to show its samples.

They also produce visual pigments throughout their body, and may sense light levels directly from their body.

This C allele is responsible for producing red pigment.

Cyanamid bought it in 1929 to produce pigments, dyes and other chemicals.

Instead, white-like coat colors result from various changes in the ways melanocytes produce pigment.