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已知白血病和淋巴瘤病人的亲属对这类疾病有较一般为高的发病率。Videback 1947年对此问题进行了研究。近年来 Gunz 等对白血病作了广泛家族调查。除对家族性问题研究外,也有一些关于接触病人而可能有较高的白血病和淋巴瘤发病率的报导。从这些家族性或非家族性丛发(Clusterings)的情况所得出的推论主要集中于遗传诱发因子和传播物质(Transmissible agents)。此两因素之间存在相互作用是极可能的,即可因遗传因素的作用而增加其对诱发疾病的环境因素的易感性。1975年 Gunz 等对909名白血病患者的调查中,发现72例有一个以上的白血病亲属,但一家内
Relatives of leukemia and lymphoma patients are known to have a more generally high incidence of such diseases. Videback studied this issue in 1947. In recent years, Gunz et al. Have made extensive family surveys of leukemia. In addition to research on familial issues, there are some reports of contact with patients that may have a high incidence of leukemias and lymphomas. Inferences drawn from these familial or non-familial Clusterings are mainly focused on genetic predisposing agents and transmissible agents. The interaction between these two factors is most likely to increase their susceptibility to the environmental factors that cause the disease due to genetic factors. In 1975, Gunz et al investigated 909 leukemia patients and found that 72 patients had more than one relative of leukemia, but within one