TOPICS: Epidermis, dermis, fibroblasts, collagen type I, collagen type III, vitamin A, hypodermis, adipocytes, stratum corneum, keratinocytes, stratum lucidum, stratum granulosum, stratum spinosum, desmosomes, stratum basale, melanocytes, stem cells, hemidesmosomes, melanin, albinism, vitiligo, melanocyte, desmoglein, pemphigus vulgaris, basement membrane, epithelium, bullous pemphigoid