皮肤和黏膜将人体保护起来，使人体对外界形成了一个密闭的系统，当有害物质将要侵入人体时，首先是皮肤和黏膜将外界致病因素阻挡在体外。所以皮肤和黏膜是人体抗感染的第一道防线。
接尘工人的皮肤针刺试验和鼻粘膜激发试验的阳性率分别达11 5 % ，4 6 %。
Meanwhile, positive rates of skin prick test and nose stimulating test in tobacco workers were 11 5% and 4 6% respectively.
一种遗传疾病，以先天性局部皮肤缺损、大疱性表皮松解症、口腔粘膜病变、甲营养不良为特征。
Bart syndrome is a genetic disorder characterized by the association of congenital localized absence of skin, epidermolysis bullosa, lesions of the mouth mucosa, and dystrophic nails.
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