Neuromuscular junction from a Drosophila larva showing a nerve synapse atttached to a muscle fibre. The transmission of signals in shown via synaptic vesicles containing neurotransmitter substance (shown in red). These vesicles are in close accosiation with the microtubule-based synaptic core cytoskeleton o the nerve, which is shown in green.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Neuromuscular junction from a Drosophila larva showing a nerve synapse atttached to a muscle fibre. The transmission of signals in shown via synaptic vesicles containing neurotransmitter substance (shown in red). These vesicles are in close accosiation with the microtubule-based synaptic core cytoskeleton o the nerve, which is shown in green. Hermann Aberle, University of Munster. Source: Wellcome Collection.