Harvard researcher Sriram Sankararaman, the lead author of the Nature study, said the place where Neanderthal DNA seemed to have the most influence in the modern human genome has to do with skin and hair.Akey said those instructions are as much as 70 percent Neanderthal.arvard researcher Sriram Sankararaman, the lead author of the Nature study, said the place where Neanderthal DNA seemed to have the most influence in the modern human genome has to do with skin and hair.
Print | Email article to a friend | Last updated: March 31, 2015. Prolactin is a hormone produced in the pituitary gland, named because of its role in lactation. It also has other wide ranging functions in the body from acting on the reproductive system to influencing behaviour and regulating the immune system.
c. Prolactin. Prolactin is a peptide hormone secreted by the pituitary, an important endocrine gland located at the base of the brain. Prolactin levels increase over the course of pregnancy, enhancing the growth and final maturation of the complex internal structures of the mammary system.igure 1: The endocrine system is made up of organs, called glands, which send chemical messages throughout the body. These glands produce and release hormones, which maintain physical growth and energy balance and support the development of sex organs, including the breasts.