Figure 5
Physiological analysis of the haemolytic and lecithinase activities of B. subtilis natto and B. cereus : a – B. cereus haemolytic activity showing halo around the cells, b – B. subtilis natto haemolytic activity with no halo observed around the cells, c: B. cereus lecithinase activity with halo indicating the presence of lecithinase action, d – B. subtilis natto lecithinase activity test without halo, indicating the absence of lecithinase activity.