On the quantal release of the transmitter at a sympathetic synapse.
D000109:Acetylcholine; D000368:Aged; D001341:Autonomic Nervous System; D005724:Ganglia; D005725:Ganglia, Autonomic; D006801:Humans; D013569:Synapses
D000109:Acetylcholine
ACETYLCHOLINE; GANGLIA, AUTONOMIC; SYNAPSES