Botulinum toxin nerve block mechanism, illustration

Numéro d’image : 12583350
Botulinum toxin nerve block mechanism, illustration
Botulinum toxin nerve block mechanism. Cutaway illustration of a nerve axon terminal and the mechanism by which the botulinum toxin causes nerve paralysis. Inside the nerve are vesicles (spheres) of the neurotransmitter acetylcholine, with ion channels (blue) in the membrane. At lower centre, are SNARE proteins (blue strands) that act at the synaptic junction at the terminal end of the axon to promote the successful release of acetylcholine (one vesicle shown merging with membrane). The toxin breaks these SNARE proteins, preventing the release of acetylcholine and resulting in paralysis of muscles and nerves. This can be swiftly fatal, but is also used in small amounts in medicine.
Licence : Droits gérés
Crédit: Science Photo Library / De Angelis, Maurizio
Taille de l’image : 5150 px × 3431 px
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Property Release : Non requis
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