The findings support previous research which suggests that exposure to germs during early childhood can prime the immune system to prevent allergies.

这项研究结果支持了以往的研究：说明在幼儿期接触细菌能刺激免疫系统，预防过敏。

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It also may help support your immune system, which in turn could help your skin fight off bacterial acne.

它可以帮助你增强免疫系统，进而使你的皮肤战胜细菌。

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Many studies show that social support revs up the immune system, and helps prevent colds.

大量的研究已经证明社会帮扶能增强人体的免疫力，有助于预防感冒。

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These bacteria also support the immune system, and aid the creation of B-vitamins.

CNN: Vital Signs health tips

This new approach is named after the PD-1 pathway for programmed death-1 which illustrates how the immune system and cancer cells inadvertently conspire to support some tumors.

WSJ: New Cancer Drugs Use Body's Own Defenses

The hormones suppress the immune system and also produce natural steroids to help support the baby.

BBC: Pregnancy - the 'miracle' cure?