title: The fine structure of freeze-fractured presynaptic membranes prepared from guinea pig brain homogenates.
mesh_terms: D000818:Animals; D001921:Brain / Q000648:ultrastructure*; D005614:Freeze Fracturing; D006168:Guinea Pigs; D013347:Subcellular Fractions; D013574:Synaptosomes / Q000648:ultrastructure*