synaptic vesicles defined in 1951 yearsynaptic vesicles - synaptic vesicles;
synaptic vesicles - Organelles of nerve cells occurring at pre-synaptic side of synapse. Membrane-bounded sacs, 300-500 Angstroms in diameter. Supposed that they contain the neurohumoral substance, whose release at the nerve ending, when impulses arrive there, excites the post-synaptic nerve cell.
near synaptic vesicles in Knolik
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