while klebsiella strains donated cefotaxime , cefamandole and cefuroxime resistance to escherichia coli k-12 recipients , the genetic analysis of exconjugants after the transfer of plasmids from serratia strains to proteus or salmonella recipients showed that the cefoxitin resistance determinant was also co-transferred .
C0007554
cefotaxime
C0007562
cefuroxime