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1 A neurotoxin is a toxic agent or substance that inhibits, damages or destroys the tissues of the nervous system, especially neurons, the conducting cells of your body's central nervous system. 2  This is an example of a cytotoxin.
Botulinum Toxin (BTX) is a group of neurotoxins consisting of eight distinct compounds, referred to as BTX-A,B,C,D,E,F,G,H, which are produced by the bacterium Clostridium botulinum and lead to muscular paralysis.