calf brain synaptic plasma membranes were saturated under extracellular conditions with [ 14c ] glutamic acid and the resulting labelled membranes fractionated with 0.9 % nacl , distilled water , n-butanol-water , 0.05 mol/l naoh and 0.5 % triton x-100 solutions in this order .
C0790233
distilled water
C0043047
water