The Botulinum toxin is produced by the Clostridium botulinum bacterium. This neurotoxin is the most toxic protein, though it has medical uses to treat muscle spasms and for cosmetic procedures. Its commercial names are Botox, Dysport, and Myobloc.
Botulinum Toxin - Botox
By Anne Marie Helmenstine, Ph.D., About.com Guide
Crystallographic structure of the A serotype of the Botulinum neurotoxin, Botox.
Lacy, D.B., Tepp, W., Cohen, A.C., DasGupta, B.R., Stevens, R.C.Drug Fact Sheets
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