Assertion: neuron's number | /r/HasProperty | packed with neurotransmitter chemicals
Facets:
Source sentences:
text: The presynaptic area contains large numbers of tiny spherical vessels called synaptic vesicles, packed with neurotransmitter chemicals.
text: The presynaptic area contains large numbers of tiny spherical vessels called synaptic vesicles, packed with neurotransmitter chemicals.