摘要
Pingyangmycin is an antitumor antibiotics developed jointly by the scientists of the Institute of Antibiotics, the Chinese Academy of Medical Sciences and North China Pharmaceutical Factory from Streptomyces verticillus var. Pingyangensis. It is markedly effective against squamous cell carcinoma of the head, neck and the cervix and fairly effective against mammary, nasopharyngeal and esophageal carcinoma. Chemically it is A5 component of bleomycin. Bleomycin obtained from commercial
