如果有人告诉你,在你的皮肤、呼吸道、消化道、眼结膜等地方藏匿有上百种细菌,总重量可达到1.3千克,你会不会吓一跳?没错,自从胎儿离开母体之后,体内就会有微生物存在。它们分布在健康人体的体表、粘膜和与外界连通的各种腔道中,并且在长期的进化过程中彼 If someone tells you that there are hundreds of bacteria hidden in your skin, respiratory tract, digestive tract, conjunctiva and other places, the total weight of up to 1.3 kg, you will not be surprised? Yes, since the fetus after leaving the mother, There will be microorganisms in the body. They are distributed in the healthy body’s body surface, mucous membranes and various channels connected with the outside world, and in the long evolutionary process of his