Absence of beta-exotoxin in Thuricide preparations.

The biological insecticide Thuricide is produced from B. thuringiensis, Berliner, var. kurstaki (serotype 3a, 3b), a bacterial strain which does not synthesize exotoxin. Thus, our product is devoid of any C-mitotic or mutagenic potentiality such as is to be found in exotoxin.