the in-vitro activity of three long-acting cephalosporins ( cefotetan , cefonicid and ceftriaxone ) was compared against 206 clinical isolates of bacteroides fragilis , peptostreptococcus species and clostridium perfringens , using an agar dilution procedure to determine minimum inhibitory concentrations ( mics ) .
C3536856
cephalosporins
C0007551
cefonicid