title: A method for measuring the outer membrane-permeability of beta-lactam antibiotics in gram-negative bacteria.
mesh_terms: D000667:Ampicillin / Q000378:metabolism; D002463:Cell Membrane Permeability; D002510:Cephalosporinase / Q000378:metabolism; D002511:Cephalosporins / Q000378:metabolism*; D002512:Cephalothin / Q000378:metabolism; D007700:Kinetics; D008722:Methods; D010400:Penicillin G / Q000378:metabolism; D010406:Penicillins / Q000378:metabolism*; D011511:Proteus / Q000378:metabolism*
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D000667:Ampicillin; D002510:Cephalosporinase; D010400:Penicillin G; D002512:Cephalothin