the in vitro activity of each of two oral [ cefatrizine ( bl-s640 ) , cephalexin ] and three parenteral ( cefamandole , cefazolin , cephapirin ) cephalosporin antibiotics was compared with that of cephalothin against 168 clinical isolates of gram-negative and gram-positive bacteria selected as resistant to 20 mug of cephaloridine per ml on the basis of agar dilution susceptibility test data .
C3536856
cephalosporin
C0007727
cephaloridine