1Shenberg C,Feldstein H,Cornelis R,et a1.Br,Rb,Zn,Fe.Se and K in blood of colorectal patients by INAA and PIXE.J Trace Elem Med Biol,1995；9(4):193.
2Ng KH.Bradley DA,Looi LM,et a1.Differentiation of elemental composition of normal and malignant breast tissue by instrumental neutron activation analysis.Appl Radiat Isot,1993；44(3):511.
3Wu CW,Wei YY,Chi CW,et a1.Tissue potassium,selenium and iron levels associated with gastric cancer progression.Dig Dis Sic,1996；41(1):119.
4Inutsuka S.Plasma copper and zinc levels in patients with malignant tumors of digestive orgnans,clinical evaluation of the Cu/Zn ratio.Cancer,1978;42:626.
5Gupta SK, Shukla VK, Vaidya MP, et al. Serum and tissue trace elements in colorectal cancer. J Surg Oncol,1993;52(3):172.
6Pierson HF. Enhancement of tumorigenicity of B16 melanoma in heterogenetic mice by administration of copper chelates.Cancer Treat Rep,1985;69:1283.
7Jellum E, Andersen A, Lund Larsen P, et al. The JANUS serum band. Sci Total Environ, 1993;1(139--140),527.
8La Vecchia C, Ferraroni M, D Avanzo B, et al. Selected micronutrient intake and the risk of gastric cancer. Cancer Epidemiol Biomarkers Prey,1994;3(5):393.
6[1]Goodwin Cs.Gastric cancer nad Helicobacter pylori:The whispering killer?Lancet,1993,342(8870):507
7[2]The Eurogast Study Group.An international association between helicobacter pylori infection and gastric cancer.Lancet,1003,34(8857):1259
8[3]CorreaP.A Human model of gastric carcinogenesis.Cancer Res,1998,48:3554～3560
9[8]Pilotto A,RassuM,BozzolaL,et al.Cytotoxin-associated gene A-positive Helicobacter pylori infection in the elderly.Association with gastric atrophy and intestinal metaplasia.Clin Gastroenterol,1998,26:118～122
10[10]Moss SF.The death of epithelium cells of stomach induced by Helicobacter pylori,Gut,1996,38(4):498
