2Hollstein MC, Metealf RA, Welsh JA, et al. Frequent mutation of the P53 gene in human esophageal cancer. Proe Natl Acad Sci USA, 1990.87(924) :9958-61.
4Jenkins DC, Clorles IC, Thomsen LL, et al. Rolesos nitric oxide in tumor growth [J]. Proc Natl Acad Sci USA, 1995, 92 ( 10 ) : 4392 -4400.
5Cello O, Masini E, Morbidell L, et al. Role of nitric oxide in angiogenesis and tumor proression in head and neck cancer[J ]. J Antiaticancer Inst, 1998,90 (8) : 587 - 596.
6Hollstein MC, Metealf RA,Weleh JA, et al. Freqdent mutation of the p53 gene in human esophageal cancer[J]. Proc Natl Acad Sci USA,1990,87 (24) : 9958 - 9961.
