title: Changes in synaptic structure affecting neural transmission in the senescent brain.
mesh_terms: D000375:Aging; D000818:Animals; D001921:Brain / Q000502:physiology / Q000648:ultrastructure*; D003712:Dendrites / Q000648:ultrastructure; D006624:Hippocampus / Q000648:ultrastructure; D008297:Male; D009474:Neurons / Q000166:cytology; D051381:Rats; D011916:Rats, Inbred F344; D013569:Synapses / Q000648:ultrastructure*; D009435:Synaptic Transmission