of all the oral antibacterial and antibiotic agents used against e. coli , mecillinam ( mpc ) , cefaclor ( ccl ) and pipemidic acid ( ppa ) proved to have high antibacterial potency , and their mic90 ( the concentration to inhibit growths of 90 % of the objective bacteria ) was 3.13 micrograms/ml .
C0007537
cefaclor
C0279516
antibacterial