Postnatal Restriction of Activity-Induced Ca2+ Responses to Schwann Cells at the Neuromuscular Junction Are Caused by the Proximo-Distal Loss of Axonal Synaptic Vesicles during Development. - Heredia DJ; Feng CY; Agarwal A; Nennecker K; Hennig GW; Gould TW (The Journal of neuroscience : the official journal of the Society for Neuroscience, 2018)