Figure 2: Time kill assay of EFRA against Escherichia coli (E. coli) BRL-17. The bacterial growth from initial (0 h) to injection point (6 h) were similar in both groups. The significant difference between the two groups starts from the injection point. The EFRA was added to the test only after 6 h of incubation (Injection point). EFRA can kill the bacterial cells within 6 h of exposure time. P<0.05 was considered significant.