Cleavage action of pBR322 DNA by bleomycin(BLM), bleomycin A 5(BLMA 5 ) and peplomycin (PEP) was determined by electrophoretic analysis in agarose gel.

• 本文用琼脂糖凝胶电泳分析测定了博莱霉素(BLM),平阳霉素(BLMA_5)和匹莱霉素(pEP)对pBR322 DNA的断裂作用。