Figure 4. Removing blood stains from cloth. The protease (5 U/ml) was incubated with the cloth and incubated at 45- 50ºC for different time. For further detail refer to text. C = control, 1 = 5 min, 2 = 10 min, 3 = 15 min, 4 = 20 min, 5 = 30 min, 6 = 40 min, 7 = 50 min.