sebaceous gland. exocrine gland secrete sebumfor hair and skin lubrication

dermis cross care body diagram healthy science medicine medical health human vector tissue structure hair epidermis cell section skin illustration anatomy follicle sebocyte sebaceous gland pore anatomical biology infection treatment comedo bacteria formation problem layer physiology education disease pustule whiteheads pimple sebum papule clogged exocrine secrete sebumfor lubrication blood vessel