Comparison of the In Vitro Bactericidal Activity of Human Serum and Leukocytes Against Bacteroides fragilis and Fusobacterium mortiferum in Aerobic and Anaerobic Environments

In aerobic and anaerobic in vitro environments, Fusobacterium mortiferum was killed by human leukocytes or serum alone or in combination; clinical isolates of Bacteroides fragilis were killed only by leukocytes in the presence of serum.