the chemotherapeutic efficacy of ( 6r,7r ) -7- ( 2- [ 3,5-dichloro-4-oxo-1 ( 4h ) -pyridyl ] -acetamido ) -3- ( [ ( 5-methyl-1,3,4-t hiadiazol-2-yl ) -thio ) -8-oxo-5-thia-1-azabicyclo [ 4,2,0 ] oct-2-ene-2-carboxylic acid ( cefazedone , refosporen ) was assayed in comparison to cefazolin and cephalothin in experimental bacterial murine infections with 6 gram-positive and 8 gram-negative strains of the genera staphylococcus , streptococcus , pneumococcus , escherichia , klebsiella , proteus , pasteurella and salmonella .
C0007546
cefazolin
C0004623
bacterial