[The effects of cold exposure on the ileum mechanical barrier in mice and its mechanisms].

To study the mechanisms of cold exposure mediated ileum mechanical barrier injury in mice. Twenty mice were randomly divided into the control and cold exposure groups. Both the control and cold exposure groups were placed in the climate room with (24±2)℃ and 40% humidity.

[Effects of prenatal maternal cold stress on spontaneous, exploratory and anxious behaviors in offspring].

Objective: To study the effects of prenatal cold stress on the behavior and mood of offspring in pregnant rats.

Methods: Six SPF-class Wister pregnant rats were randomly divided into normal temperature control group and cold stress group with 3 rats in each group. The pregnant female rats in the normal temperature control group were kept in the environment of (22 ±2)℃, and the pregnant female rats in the cold stress group were placed in the artificial intelligence climate chamber at(4 ±0.