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鼠伤寒杆菌是沙门菌属中在人类和动物间广泛流行的细菌,可以人为的使家兔感染如利用小白鼠作鼠伤寒杆菌试验,小白鼠感染以后,几乎是100％的死亡率。且小白鼠身体很小,在观察时颇不方便,而家兔菌感染后可以见到轻重不等的病程。经口感染时家兔并不发病,即使是大量的鼠伤寒菌经十二指腸导管灌入胃内,也不发病,细菌灌入以后,在不同时间内吸取胃液培养,均为阴性,证明所有灌入的细菌在短时间内均被杀死,灌入以后,经24小时开腹,培养腸内容物,也不能看到该菌的生长,只有极少数家兔可以从十二指腸部培养出少量的鼠伤寒杆菌,又可以从腸系膜淋巴结分离出该菌。氏菌氏等认为游离
Salmonella typhimurium Salmonella is widely in humans and animals between the bacteria can be artificially infected rabbits such as the use of mice for Salmonella typhimurium test mice infected with almost 100% mortality. And the body of mice is very small, quite inconvenient in the observation, and rabbits infected with bacteria can see the severity of the disease range. Rabbits are not affected by oral infection, even if a large number of typhoid bacteria through the duodenal catheter into the stomach, nor disease, after the infusion of bacteria, gastric juice at different times to learn, were negative, all irrigation Of the bacteria were killed within a short period of time. After being infused, the intestinal contents could not be seen after 24 hours of laparotomy. Only a small number of rabbits could develop a small amount of typhoid fever from the duodenum Bacillus, but also from the mesenteric lymph nodes isolated from the bacteria. Fungus, etc. that free