TY - RPRT TI - Increased DNA chain breakage by combined action of bleomycin and superoxide radical. AU - R Ishida AU - T Takahashi PY - 1975 DO - 10.1016/0006-291x(75)90519-7 UR - https://pubmed.ncbi.nlm.nih.gov/53051/ ID - 53051 ER -