By Jennifer Linder, M.D. | August 27, 2013
... one to six (with one being the lightest and six the darkest) based on the color of their skin. For each general pigment classification, there are documented corresponding characteristics. However, this method does not account for the fact that many individuals ...
By Christine Heathman, C.M.E. | August 27, 2013
... outside world, all relative to aging. Why Cells Age and DieIn 1962, two cell biologists, Dr. Leonard Hayflick and Dr. Paul Moorhead, made one of the greatest contributions to the history of cellular biology by demonstrating the senescence of cultured ...