Cell Biology

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Triple Fluorescent Label; convocal light micrograph showing acetylcholine receptors at the end-plates (labeled red) with alpha-bungarotoxin; the protein synaptophysin, which is a component of the transmitter-rich synaptic vesicles, is labeled green; and the innervating axons are labeled blue. Neuromuscular junctions consist of nerve fibers divided into numerous branches, each ending on a region of muscle fiber referred to as the motor end-plate.