<prompt> Botulinum toxin acts by which mechanismTransmitter uptake inhibitionTransmitter release inhibitionTransmitter synthesis inhibitionTransmitter breakdown inhibition  <response>: Clostridium botulinum produces type A toxin. It acts by blocking the release of acetylcholine at the synapses and neuromuscular junction. Thus blocks neuromuscular transmission. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 269 