mean mics ( micrograms./ml. , +/- sd ) were 2.2 +/- 1.4 for cefaclor , 4.4 +/- 2.0 with amoxicillin , 8.1 +/- 4.2 for cephradine , and 5.7 +/- 3.0 with cephalexin .
C0007738
cephradine
C0007716
cephalexin