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1·Some research even suggests that immune function is improved when we are around our friends.

一些研究甚至表明，当我们和朋友在一起时，免疫功能会得到改善。

2·When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function.

当人们睡眠不足时，他们体内的应激激素水平会升高，造成免疫功能下降。

3·When people are sleep-deprived, there are higher levels of stress hormones in their bodies which can decrease immune function, says Doctor Felice of Northwestern University in Chicago.

芝加哥西北大学的费利斯博士说：“当人们睡眠不足时，他们体内的应激激素水平会升高，这会降低免疫功能。”

4·When people are sleep deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function. says Doctor Felice of Northwestern University in Chicago.

芝加哥西北大学的费利斯博士说：“当人们睡眠不足时，他们体内的压力荷尔蒙水平会升高，这会降低免疫功能。”

5·When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function, says Dr. Phyllis Zee of Northwestern University in Chicago.

芝加哥西北大学的博士费利斯·徐说：“当人们睡眠不足时，他们体内的应激激素水平会升高，这会降低免疫功能。”

6·The cerulenin can remarkably improve the immune function of wistar rat.

浅蓝菌素可明显改善威斯塔鼠的免疫机能。

7·Isoprinosine and muramyl dipeptide (MDP) could promote animal immune function, and prolong the sleeping time of mice and rabbits.

异斯皮洛宁和鼠基二肽（MDP）可以促进动物的免疫功能，并延长小鼠和兔子的睡眠时间。

8·It may also support healthy immune function.

维他命c可以提高健康身体的免疫功能。

9·In short, personality traits may affect immune function.

简而言之，人格特质可能影响免疫功能。

10·It could also regulate the immune function of their bodies.

而且它还能调节机体的免疫功能。