in vitro activity of an aminopenicillin ( amoxicillin or ampicillin ) combined with a betalactamase inhibitor ( clavulanic acid or sulbactam , 2 mg/l ) was examined against 39 strains of k. pneumoniae producing 3 types of extended broad spectrum betalactamases ( ctx-1 , shv-3 , shv-4 ) .
C0002645
amoxicillin
C0002680
ampicillin