[Cell kinetics of human scalp hair--impulse cytophotometric studies].

DNA Flow Cytometric measurements (DNA-FCM) were performed on both anagen hair bulbs of 21 healthy volunteers (11 females, 10 males; aged between 18 and 21 years) and tufts of plucked hairs from 43 test persons (17 showing normal trichograms, 12 with telogen and 14 with dystrophic hair root pattern; aged between 19 and 49), subsequently submitted to routine trichogram investigation. The high proliferative activity of anagen hair bulb cells was accurately registered by FCM. Neither sex nor hair color nor hair length were found to influence the proliferative parameters. The degree of hair loss-as diagnosed on account of the trichogram-was also reflected by the DNA histograms; telogen and dystrophic hair root patterns, however, could not be discerned by FCM.