93384-44-2 https://www.creativebiomart.net/therapeutic-proteins/p/28/neurotoxin-produced-by-fermentation-of-clostridium-botulinum-type-b/ Neurotoxin produced by fermentation of clostridium botulinum type B. The protein exists in noncovalent association with hemagglutinin and nonhemagglutinin proteins as a neurotoxin complex. The neurotoxin complex is recovered from the fermentation process and purified through a series of precipitation and chromatography steps.