Types of exotoxin and list of exotoxins

Exotoxins are proteins produced by both gram-positive bacteria and gram-negative bacteria. There are different types of exotoxin. They are considered to be among most lethal substances as they can easily disseminate in blood for their high solubility. A little amount of exotoxins is sufficient to be a lethal dose. For example, 1mg of botulinum toxins is enough to kill 1 million guinea pigs.

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