长期使用广谱抗生素是引起菌群失调的重要原因。因此在进行抗菌治疗时,既要选用敏感的抗生素,也要监测肠道菌群,以防止菌群失调症的发生。然而对肠道菌群种和量的细菌学监测,在大多数实验室尚有困难。通过悉生生物学(gnotobiolog)研究证实,肠道中某些微生物的存在和它们的数量与肠道含有的消化酶密切相关。在无菌悉生小鼠粪便中含有二肽—— Long-term use of broad-spectrum antibiotics is an important reason causing flora. Therefore, antimicrobial treatment, it is necessary to use sensitive antibiotics, but also to monitor the intestinal flora, in order to prevent the occurrence of flora. However, bacteriological monitoring of the species and amount of gut bacteria remains difficult in most laboratories. The gnotobiolog study confirms that the presence of certain microbes in the gut and their numbers are closely related to digestive enzymes contained in the gut. In sterile excretion of male mice containing dipeptide -