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本文报道，７５ｍＧｙ（１２．５ｍＧｙ／ｍｉｎ）单次全身Ｘ射线照射后９小时用ＳＲＢＣ免疫Ｃ５７ＢＬ／６小鼠，在免疫后４天和７天脾脏、胸腺和下丘脑ｃＡＭＰ含量均降低，而在免疫后４天脾脏去甲肾上腺素、肾上腺素和酪氨酸含量均增高，免疫后７天肾上腺素含量仍持续增高，当连续γ射线６５ｍＧｙ（０．０１５ｍＧｙ／ｍｉｎ，６ｈ／ｄ）全身照射小鼠后即刻或２９小时后免疫，脾脏和下丘脑ｃＭＰ含量也均降低。提示，低剂量照射小鼠，使免疫器官儿茶酚胺释放增加，ｃＡＭＰ代谢降低，可能导致淋巴细胞增殖和免疫功能增强。
Here, we report that C57BL / 6 mice were immunized with SRBC 9 hours after 75mGy (12.5mGy / min) single-body X-ray irradiation. The levels of cAMP in spleen, thymus and hypothalamus decreased at 4 and 7 days after immunization. The content of norepinephrine, epinephrine and tyrosine in the spleen increased 4 days after the immunization, and the content of epinephrine continued to increase 7 days after the immunization. When continuous γ-rays 65mGy (0.015mGy / min, 6h / d) Rats were immunized immediately or 29 hours later, and the cmp content in the spleen and hypothalamus also decreased. Tip, low-dose irradiation of mice, the release of immune organs increased catecholamines, cAMP reduced metabolism, may lead to lymphocyte proliferation and immune function enhancement.