the comparative in vitro activities of 12 antipseudomonal beta-lactams appreciated by microtiter mics with an inoculum of 10 ( 5 ) cfu were established according to phenotype : tic-susceptible , tic-r with a constitutive beta-lactamase ( pse-1 , oxa-1 , oxa-2 , oxa-3 , pse-2 and a new type , tem-1 and tem-2 and derepressed cephalosporinase ) or without detectable activity .
C0597979
beta-lactamase
C0728805
cephalosporinase