The human thymic microenvironment: Thymic epithelium contains specific keratins associated with early and late stages of epidermal keratinocyte maturation , H8 p" ?0 N8 ~/ h0 m6 d2 k' e8 C) B地址:http://onlinelibrary.wiley.com/doi/10.1111/j.1432-0436.1986.tb00385.x/abstract