It is produced by the bacterium clostridium botulinum. Botulism is a rare disease caused by "Clostridium botulinum" bacteria. Botulinum toxin produced by "Clostridium botulinum" is the cause of botulism. The main concern when canning is anaerobic microorganisms that produce toxins like "Clostridium botulinum". Botulinum toxin is a neurotoxin protein produced by the bacterium "Clostridium botulinum". Infants can develop botulism after consuming honey contaminated with "Clostridium botulinum" endospores. Tar heroin injection can also be associated with "Clostridium botulinum" infection. The "Clostridium botulinum" bacteria are the cause of botulism. Unlike "Clostridium botulinum", it does not produce the botulinum neurotoxins. A related bacterium, "Clostridium botulinum", produces the botulinum toxin. This specific molecule is formed by Clostridium Botulinum, a spore forming bacteria. Botulin is produced by "Clostridium botulinum" and causes the deadly disease botulism. On 31 July 2013, tests revealed signs of "Clostridium botulinum", leading to the recall. Botulinum toxin (from "Clostridium botulinum") and bleomycin (from "Streptomyces verticillus") are two examples. Botulinum toxin produced by the bacteria Clostridium botulinum is the most powerful toxic protein.