被动免疫:外来的,很短暂皮肤和黏膜,第一道防线。宝宝刚出生时,娇小羸弱,需要爸爸妈妈的精心呵护、细心照料。为了保证新生宝宝的健康成长,妈妈在宝宝出生前就为宝宝准备了各种抵抗外界病原微生物的法器。比如,宝宝体表完整的皮肤以及覆盖在鼻、咽、喉、胃肠道、呼吸道等表面的黏膜就是人体非常重要的抵御疾病的第一道防线。 Passive Immunity: Exotic, very short skin and mucous membranes, the first line of defense. Baby was born, petite weak, parents need careful care, careful care. In order to ensure the healthy growth of newborn baby, mother prepared a variety of anti-pathogenic microorganisms for the baby before birth. For example, the intact skin of babies and mucous membranes covering the surface of the nose, pharynx, pharynx, laryngotracheal tube, respiratory tract and the like are the first line of defense against diseases that are very important to the body.