Abstract
Scorpion (
Leiurus quinquestriatus H and E) venom was fractionated into nine components by a combination of Biogel P 100 column chromatography and cellulose acetate electrophoresis. Three electrophoretic protein fractions proved to be extremely toxic to mice. Two of these fractions produced haemorrhages in the lungs and heart. A fourth fraction, the major part of which is dialysable, was also lethal, but only when injected in very high concentrations.