继我国纪云晶教授等在国内首先发现混合硝酸稀土等对小鼠S_(180)肉瘤和Lewis肺癌的抑癌作用和对正常细胞的保护作用后,陈兴安教授等又发现了柠檬酸镧对小鼠S_(180)肉瘤相当高的抑癌率(62.7％)。北京医科大学周爱儒教授指导的研究生则发现柠檬酸镧对人肺巨细胞癌株细胞PG的抑止作用,但对正常细胞2BS则未见到有任何不良影响。 After Professor Ji Yunjing of China first discovered the effect of mixed rare earth nitrates on the tumor suppressing effect of mouse sarcoma 180 and Lewis lung cancer and the protection of normal cells, Prof. Chen Xingan et al. The S_(180) sarcoma has a very high tumor suppressor rate (62.7%). Professor Zhou Airu, a professor at the Beijing Medical University, found that citrate citrate inhibited PG in human lung giant cell carcinoma cell lines, but did not show any adverse effects on normal cells 2BS.