微生态学研究发现,人的体细胞数为1013,而存在于体表体内微生物细胞数则为1014。后者称生理微生物(normolmicrobiota,NMT),它是体细胞的10倍。NMT与机体已形成相互依存、相互受益、相互协调又相互制约的动态的统一平衡体,称微生态平衡。平衡状态不致病且有益,若有益菌减少,失衡 Microecology studies found that the number of human somatic cells was 1013, while the number of microbial cells present in the body surface was 1014. The latter refers to the normolmicrobiota (NMT), which is 10 times more than somatic cells. NMT and the body have formed a dynamic, unified and balanced body of interdependence, mutual benefit, mutual coordination and mutual restraint, calling micro-ecological balance. Balanced state is not pathogenic and beneficial, if the reduction of beneficial bacteria, imbalance