title: Trophic factors and postsynaptic activity in synapse formation.
mesh_terms: D000109:Acetylcholine / Q000502:physiology*; D000375:Aging; D000818:Animals; D006801:Humans; D024510:Muscle Development; D011950:Receptors, Cholinergic / Q000502:physiology; D013569:Synapses / Q000502:physiology*
chemical_list: D011950:Receptors, Cholinergic; D000109:Acetylcholine