Table 3. Killing kinetics of cathelicidin-RC1 against E. coli ATCC25922.

Time	Colony Forming Units (×103, CFUs/ml)
	0 min	10 min	20 min	30 min	45 min	60 min	90 min	120 min	180 min
Cathelicidin-RC1	83±7.9	79±21.2	40±28.1	50±10.1	8±5.6	0±0.0	0±0.0	0±0.0	0±0.0
Meropenem	78±8.7	98±11.7	82±12.1	90±14.9	63±40.7	69±15.5	1±1.7	0.3±0.6	0±0.0
Control	93±8.1	81±20.8	96±10.1	104±30.5	96±42.6	168±17.9	387±20.1	637±115.8	1104±145.7

E. coli ATCC25922 was mixed with samples at concentration of 5×MIC for 0, 10, 20, 30, 45, 60, 90, 120 and 160 mins. The results represent mean values of three independent experiments performed in duplicates. The MICs of cathelicidin-RC1 and meropenem against E. coli ATCC25922 are 4.69 and 0.01 μg/ml, respectively.