[答]这个问题涉及到恶性肿瘤的传染性问题。据国内外文献记载,恶性肿瘤在体内可通过血道或淋巴道发生转移,但仍未证实恶性肿瘤具有传染性。虽然目前某些动物的恶性肿瘤已断定为病毒引起,而且在人体某些恶性肿瘤中也已分离出病毒,如从非洲淋巴瘤(Burkitt’s瘤)分离出呼吸道Ⅲ型病毒 [Answer] This issue involves infectious diseases of malignant tumors. According to domestic and foreign literatures, malignant tumors can metastasize through the blood or lymph in the body, but it has not been confirmed that the malignant tumors are infectious. Although some animal malignancies have been determined to be caused by viruses, and viruses have also been isolated in some human malignant tumors, such as the isolation of respiratory type III virus from African lymphoma (Burkitt’s tumor).