ウェルシュ菌
It can be produced by "Clostridium perfringens", "Staphylococcus aureus", "Pseudomonas aeruginosa" or "Listeria monocytogenes". "C. perfringens" alpha toxin (lecithinase) causes myonecrosis and hemolysis. The lecithinase of "S. aureus" is used in detection of coagulase-positive strains, because of high link between lecithinase activity and coagulase activity.