ribbon synapse

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A structurally distinct synapse found in a variety of sensory receptor cells where transmitter is continuously released in response to small graded changes in potential, rather than by an action potential. Synaptic vesicles are attached to the presynaptic membrane in dense bars or ribbons and there may be multivesicular release. The ribbon-specific proteins ribeye and bassoon are responsible for the physical integrity of the photoreceptor ribbon complex.

Subjects: Medicine and Health.

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