some information

1. GNR:  bacteroides fragilis

2  GPR   a. clostridium perfringens

               b. propionibacterium

3. Campy:  Cefazolin (cephalothin)

                  Nalidixic  acid


http://www.smfa.edu/default.asp


http://www.smfa.edu/PDFs/undergrad093004B.pdf