为了认识影响照后血小板降低的因素,我们利用~(51)Cr标记法观察了照射、切脾、522和短棒菌苗等对大鼠血小板寿命及其在脏器中分布的影响。结果表明: 供体接受825拉德照射后早期,其血小板经标记输给照射同样剂量的受体时,半寿期比正常组缩短6.7小时,同样血小板在正常受体循环中的半寿期仅缩短2小时,提示受体照射对外周血小板寿命的影响不可忽视。 In order to understand the factors that influence platelet reduction after irradiation, we used ~ (51) Cr labeling method to observe the effects of irradiation, splenectomy, 522 and short bacillus vaccine on platelet life span and its distribution in the organ. The results showed that the half-life of platelets was shortened by 6.7 hours compared with that of the normal group when the platelets were irradiated with the same dose of receptor platelets at the early stage of exposure to 825 rads, and the half-life of platelets in the normal circulation was only Shortened 2 hours, suggesting that receptor irradiation on the impact of peripheral platelet life can not be ignored.