一、血型和恶性疾病的关系血型和疾病的关系已被广泛地研究。有报告说,A型和胃癌之间有重要的联系。癌症频率的这种增高,可能是由于癌具有类—A抗原的倾向。O型或B型的人比A型的人更容易制造出针对类—A抗原的抗体,因此A型的人防止肿瘤发展的能力较 First, the relationship between blood type and malignant disease The relationship between blood type and disease has been extensively studied. There are reports that there is an important link between type A and gastric cancer. This increase in the frequency of cancer may be due to the tendency of cancer to have a class A antigen. O-type or B-type humans are more likely to produce antibodies against A-like A antigens than A-type ones, and thus A-type humans are more resistant to tumor development.