wherein {HEAD ~ the anaerobic bacteria} is selected from {TAIL ~ the group} consisting of Bacteroides fragilis, Bacteroides malaninogenicus, Fusobacterium nucleatum, Clostridium perfringens, and Anaerobic cocci 
wherein { HEAD ~ the anaerobic bacteria } is selected from { TAIL ~ the group } consisting of Bacteroides fragilis , Bacteroides malaninogenicus , Fusobacterium nucleatum , Clostridium perfringens , and Anaerobic cocci
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH