Some people scrub them every day while others say letting water run over them in the shower is enough. So are you cleaning ...

They also found evidence showing that the ability to form cornified skin appendages goes all the way back to early tetrapods. Corneous scales are considered to be appendages when they appear on ...

Inhibiting the sonic hedgehog (Shh) pathway strongly perturbs feather development in chickens by restricting feather bud ...

The results were published in Nature Communications. In order to investigate the evolution of skin appendages, which include ...

View Full Profile. Learn about our Editorial Policies. Most vertebrate skin appendages—hair, feathers, and scales—develop in a pattern dictated by the interaction of functionally opposing molecules.