resistance of ceftriaxone , cefotaxime and cefmenoxime to inactivation by the chromosomal constitutive cephalosporinases of enterobacter cloacae p99 , morganella morganii gn 1510 and serratia liquefaciens 132 was determined using high performance liquid chromatography .
C0007554
cefotaxime
C0007549
cefmenoxime