Medically reviewed by William Truswell, MD Hair grows out of pores, small openings in the skin that secrete sweat and sebum ...

In fact, some experts think that this just means the cluster of skin cells that make up the mole is simply sitting on an area ...

Iris Kulbatski, a neuroscientist by training and word surgeon by trade, is a science editor with The Scientist's Creative Services Team. She holds a PhD in Medical Science and a Certificate in ...

This includes the skin, hair follicles and the iris of the eye, where they contribute to coloration. Melanocytes can also grow in clusters, forming moles that can appear anywhere on the body.

Corticosterone interferes with signaling in the skin that normally activates hair follicle stem cells, possibly explaining the link between stress and hair loss. In mice, the fight-or-flight response ...