TY - RPRT TI - Experimental sensitization with penicillinase. AU - J P FISHER AU - R A COOKE AU - S O FREEDMAN AU - P A MYERS PY - 1957 DO - 10.1016/0021-8707(57)90097-7 UR - https://pubmed.ncbi.nlm.nih.gov/13462686/ ID - 13462686 ER -