TY - GEN AU - Kaidbey,K H AU - Kligman,A M TI - Pigmentation in comedones SN - 0003-987X PY - 1974///0227 KW - Acne Vulgaris KW - metabolism KW - Biopsy KW - Face KW - Humans KW - Male KW - Melanins KW - Melanocytes KW - cytology KW - Pigmentation KW - Skin N1 - Publication Type: Journal Article ER -