eighty-seven organisms were tested against ceftriaxone , cefotaxime , desacetylcefotaxime , and the combination of cefotaxime and desacetylcefotaxime ( 1:1 ratio ) in broth containing 0 , 25 , or 50 % human serum .
C0007561
ceftriaxone
C0007554
cefotaxime