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Three-dimensional structures of nicotinic acetylcholine receptor determined by cryo-EM, courtesy of Hibbs Lab. "When this receptor binds to either the neurotransmitter acetylcholine or to nicotine, it leads to activation of the neuron, which then sends signals to other neurons," said Dr. Ryan Hibbs, corresponding author [...] "This process of 'chemical neurotransmission' underlies all fast communication between neurons. This specific receptor is tightly linked to nicotine addiction."