加《医学邮报》第15卷第19期(1979年)报道:健康成人外周血液淋巴细胞在一天24小时中有一定的节律:早晨水平最低,半夜水平最高。美退伍军人管理局医学中心的麦克马洪(Leo McMahon)等3人,也发现这种淋巴细胞在昼夜24小时内的节律与皮质醇的节律呈反相关。研究人员已注意到,通常测定淋巴细胞水平时,实验室误差为±20～30％。由于测定结果不一,作为免疫状况指数的价值受到 Plus “Medical Journal” Volume 15, No. 19 (1979) reported: healthy adult peripheral blood lymphocytes in the 24 hours a day there is a certain rhythm: the lowest level in the morning, midnight highest level. Three other Leo McMahon doctors from the Veterans Administration Medical Center also found that the circadian rhythms of such lymphocytes were inversely correlated with the cortisol rhythm within 24 hours of day and night. Researchers have noticed that laboratory error is usually ± 20 to 30% when measuring lymphocyte levels. As the results of different tests, as immune status index value