gross observation of the hairiness and folliculogram analysis of the skin biopsy specimens have shown that minoxidil induces the enlargement of vellus follicles to the size of middle to terminal follicles ( regrowth of hair effect ) , minoxidil maintains the terminal follicles in the prebald scalp of periadolescent animals ( prevention of baldness effect ) , enlarged follicles regress after minoxidil is withdrawn , and hair follicular growth is once again stimulated when treatment with minoxidil is reinstituted .
C0018494
hair
C0002170
baldness