A skin pigmentation mechanism that can darken the color of human skin as a natural defense against ultraviolet (UV)-associated cancers has been discovered by scientists at Massachusetts General Hospital (MGH).

This content is restricted to registered user. If you are an existing user, please log in. New users may register for free.

Existing Users Log In
   
Forgot password? Click here to reset
New User Registration
 
 
 
 
 
 
Please indicate that you agree to the Terms of Service *
*Required field