The AhR agonist tetrachlorodibenzo-para-dioxin was utilized to treat AGS cells. MTT circulation and assay cytometric analysis were performed to measure the viability, cell routine and apoptosis of AGS cells. They discovered that AhR expression was increased in GC cells and GC cell lines significantly. IHC results indicated that the degrees of AhR expression steadily increased, with the lowest levels in CSG, accompanied by CAG, IM, GC and AH. AhR expression and nuclear translocation were higher in GC than in precancerous tissues significantly. TCDD inhibited proliferation of AGS cells via induction of development arrest at the G1-S stage.The price of tuberculosis or loss of life was lower in the continuous-isoniazid group than in the various other three groupings in this analysis. In a Cox proportional-hazards analysis, the continuous-isoniazid group experienced a threat of tuberculosis or loss of life that was 58 percent less than the chance in the control group . The rate of tuberculosis escalated after discontinuation of continuous-isoniazid treatment markedly.