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Botulinum Toxins: Toxic proteins produced from the species Clostridium botulinum. The toxins are synthesized as a single peptide chain which is processed into a mature protein consisting of a heavy chain and light chain joined via a disulfide bond. The botulinum toxin light chain is a zinc-dependent protease which is released from the heavy chain upon Endocytosis into Presynaptic nerve endings. Once inside the cell the botulinum toxin light chain cleaves specific Snare proteins which are essential for secretion of Acetylcholine by Synaptic vesicles. This inhibition of acetylcholine release results in muscular Paralysis.

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea

1Clinical and Biological Sciences Department, Neurology Unit, University of Torino, San Luigi Gonzaga Hospital, 2Oncology Department, Radiology Unit, University of Torino, San Luigi Gonzaga Hospital, 3Clinical and Biological Sciences Department, Dietologic and Nutrition Unit, University of Torino, San Luigi Gonzaga Hospital

JoVE 54606

 Medicine

IgY Technology: Extraction of Chicken Antibodies from Egg Yolk by Polyethylene Glycol (PEG) Precipitation

1Center for Biological Security, Robert Koch-Institute, 2CICVyA - INTA Castelar, Instituto de Virología, 3Center of Molecular Immunology, Ciudad de la Habana, Cuba, 4Department of Biology, Chemistry, Pharmacy, Institute of Biology-Neurobiology, Free University of Berlin, 5Institut of Pharmacology, Charité-University Medicine of Berlin

JoVE 3084

 Immunology and Infection
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