Pingyangmycin (also known as bleomycin A5) is an antitumor glycopeptide antibiotic belonging to the bleomycin family, which is produced by Streptomyces verticillus var. pingyangensis n.sp., a variety of Streptomyces verticillus. It was discovered in 1969 at Pingyang County of Zhejiang Province in China, and was brought into clinical use in 1978.
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