For transdermal drug delivery, it is considered ideal if the drug penetrates through the skin to the underlying blood supply 智早 without drug buildup in the dermal layers 理想的经皮给药系统时,药物 渗透入皮肤后,能够进入血液 而不在皮下蓄积。 (3M Transdermal Drug Delivery http://www.3m.com/dds)◼ For transdermal drug delivery, it is considered ideal if the drug penetrates through the skin to the underlying blood supply without drug buildup in the dermal layers. ◼ 理想的经皮给药系统时，药物 渗透入皮肤后，能够进入血液 而不在皮下蓄积。 (3M Transdermal Drug Delivery http://www.3M.com/DDS)