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预先给予４．０ｃＧｙγ射线照射的人外周血淋巴细胞，经ＰＨＡ刺激２４ｈ后提取细胞外液，观察其对大剂量照射后受损伤的亚群细胞的影响。结果表明，ＣＤ＋８、ＣＤ＋４细胞损伤明显减轻，且损伤剂量分别为１．５、３．０Ｇｙ时，适应性反应最强。结果还显示，ＣＤ＋８细胞较ＣＤ＋４细胞对辐射更为敏感，且在１．５Ｇｙ剂量点附近，适应性反应亦更强。
Peripheral blood lymphocytes pre-treated with 4.0 cGy γ-rays were extracted and the extracellular fluid was extracted after PHA stimulation for 24 h to observe the effect on the damaged subpopulation cells after high-dose irradiation. The results showed that the damage of CD + 8 and CD + 4 cells was significantly alleviated, and the strongest adaptive response was achieved when the doses of injury were 1.5 and 3.0 Gy, respectively. The results also showed that CD + 8 cells were more sensitive to radiation than CD + 4 cells and had a stronger adaptive response near the 1.5 Gy dose point.