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雌性 W/Fu 大鼠接受不同剂量的各种照射,然后移植分泌催乳素的垂体肿瘤,把它产生的催乳素做为乳腺肿瘤的促发剂,使射线的致癌效果更容易地表现出来,用以研究不同种类辐射的相对生物效应。结果表明,2.0MeV 裂变中子的致癌效果突出地高于其它类型的辐射,它分别为 X 线、14.1MeV 快中子和0.025eV 热中子的30,14和4.5倍。裂变中子照射的照射场与1945年广岛原爆的相当,因此这些实验结果对广岛、长崎原爆形成的中子和γ射线辐射剂量的再评价有一定参考价值。
Female W/Fu rats received various doses of various irradiations, and then transplanted pituitary tumor secreting prolactin. The prolactin produced by it was used as a trigger agent for breast tumors to make the carcinogenic effects of rays more easily expressed. To study the relative biological effects of different types of radiation. The results show that the carcinogenic effects of the 2.0 MeV fission neutron are significantly higher than those of other types of radiation, which are 30, 14 and 4.5 times the X-ray, 14.1 MeV fast neutron and 0.025 eV thermal neutron, respectively. The irradiation field of fission neutron irradiation is equivalent to the 1945 Hiroshima blast. Therefore, these experimental results have certain reference value for the re-evaluation of neutron and γ-ray radiation doses formed by the Hiroshima and Nagasaki blasts.