| polymorphisms in th1-type cell-mediated response genes and risk of gastric cancer. | helicobacter pylori infection, the dominant risk factor for gastric cancers, has been shown to elicit t helper type 1 (th1) polarized immunological responses. we conducted a population-based study of 305 gastric cancer cases and 427 age- and gender-matched controls in warsaw, poland, to evaluate the association with several variants in genes responsible for th1-cell-mediated response. genotyping was performed on genomic dna by taqman(tm) assays to determine tnfa (-308 g>a, -417 g>a, -555 g>a, -1 ... | 2007 | 16885196 |