Studies on environmental carcinogenesis in People's Republic of China.

1 ． (1)咸肉、咸鱼干、卤面具有较强的诱变性。(2)改善中国某高危地区的饮食习惯与改善高危地区胃黏膜有关。(3)弯曲杆菌感染与胃癌的相关性正在研究中。(4)黏膜下层慢性炎症患者血管毛细血管出现退行性改变。(5)切除的胃组织可以体外培养，标本正在研究中。(6)新型单克隆抗体GLO13可用于中国的诊断。(7)黄绿色蔬菜频率变化与血清胡萝卜素变化呈显著正相关。在日本，4000名居民正在进行血清β -胡萝卜素的检测。(9)中国约有100例慢性胃炎用中药治疗。（10）一种新的亚甲基蓝检测方法可以明确日本胃黏膜的肠化程度和程度。水果的摄入抑制了胃肠化的进程。肉类的摄入促进了胃壁细胞的增殖。2 ． (1)沈阳肺癌发病年龄小于京都。年龄小于39岁的鳞状细胞癌常见于日本，小细胞癌见于中国。腺囊性癌是中国肺癌的常见病。通过痰液和胸部间接x线摄影进行的大规模筛查显示，抚新地区肺癌的患病率相对较高。细胞学标本的DNA定量诊断目前正在研究中。(2)开展了肺癌病例-对照研究，数据为100例，对照200例。

1 . Stomach cancer (1) Salted pork, dried salted small fishes and vinagered noodle showed strong mutasgenieity. (2) Improving dietary habit in a high risk area, China, is associated with improving stomach mucosa in the high risk area. (3)The correlaton between campylobacter infection stomach cancer is now under study. (4) Regressive changes of cappillary of blood vessel in chronic inflammation of submucosa were found. (5) Resected tissues of stomach could be cultured out of body the specimens are under study. (6) New monoclonal antibody GLO13 is useful for diagnosis in China. (7) Positive association of changes in frequency of Green-yellow vegetable and changes in serum carotene for one year was observed. (8) Four thousands inhabitants measured serum beta -carotene in Japan are following up. (9) About 100 cases with chronic gastritis are treated by traditional herbs medicine in China. (10)A new method of methylen blue could be clarified extent and degree of intestinalisation of gastric mucosa in Japan. Intake of fruits inhibited progression of gastric intestinalisation. Meat intake promoted proliferation of parietal cells of stomach.2 . Lung Cancer (1) Age at onset of lung cancer was younger Shenyang than in Kyoto. Squamous cell carcinoma for the younger age groups less than 39 was frequently observed in Japan and small cell carcinoma was in China. Adeno-cystic carcinoma was frequently found in Chinese lung cancer. Mass screening using sputum and chest indirect radiography showed a relatively high prevalence of lung cancer in Fusin, China. DNA quantitative diagnosis on cytologin specinems is now under study. (2) Case-control study on lung cancer was carried out the data of 100 cases and 200 controls were now under study.