Objective To analyze the association of N-acetyltransferase 1 (NAT1) genetic polymorphism with the susceptibility of elderly gastric adenocarcinoma (GAC) and colorectal adenocarcinoma (CRAC).

目的探讨N 乙酰化转移酶1（NAT1）基因多态性与老年人胃肠腺癌易感性的关系。

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Objective to study the possible relationship between genetic polymorphism of N-acetyltransferase 2 (NAT2) and susceptibility to hepatocellular carcinoma.

目的探讨n -乙酰基转移酶(NAT2)基因多态性与肝癌易感性的关系。

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Objective To explore the relationship between (GT)n dinucleotide repeated polymorphism of the brain-derived neurotrophic factor (BDNF) gene and onset of negative subtype schizophrenia in Chinese.

目的探讨汉族人群中脑源性神经营养因子（BDNF）基因（GT）n二核苷酸重复多态与精神分裂症阴性亚型发病之间的关系。

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