Hemotoxin are substances that cause violation of the permeability of membranes of red blood cells and causing hemolysis. There are hemotoxin animal (poisons insect and snake, normal agglutinin blood, causing hemolysis transfusion of blood incompatible, and others) and vegetable (saponin, ricin) origin. Hemotoxin microbial origin called bakteriostatikami. Cm. also Bacteriocenosis, Hemolysis.