PREPARATION OF SPORE-FREE, CONCENTRATED PROTEIN PREPARATIONS FROM BACILLUS THURINGIENSIS SEROVAR.ISRAELENSIS, WHICH IS TOXIC FOR GNATS, A MICROORGANISM FOR THIS PREPARATION, AND THE ISOLATION OF THE MICROORGANISM

摘要

- 15 -Abstract of the Disclosure: Asporous mutants of Bacillusthuringiensis serovar. israelensis, a process for theirpreparation and their use for the isolation of bacterialtoxins for controlling diptera.