MOLECULAR WEIGHT AND HOMOGENEITY OF CRYSTALLINE BOTULINUS A TOXIN

Abstract

A TOXINThe isolation of Clostridium botulinurn type A toxin has been reported.1~2This crystalline toxin, the most potent known, contains about 220 X lo6 mouse LD50 per mg. of nitrogen.'In the equivalence zone both toxin and antitoxin are completely precipitated.0 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6:Distance from Axis of Rotation in Cm.