Looking at the effects of RIM1a which is a protein involved in neurotransmitter release. Any ideas as to why its total phosphorylation decreases as the rats develop? Many thanks Image; https://i.gyazo.com/16170fd79bd1f96517e028dfa2e70fbf.png Paper; http://www.cell.com/cell/pdf/S0092-8674(03)00...