title: New structural features of freeze-substituted neuritic growth cones.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D005615:Freezing; D005728:Ganglia, Sympathetic / Q000502:physiology / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009474:Neurons / Q000502:physiology / Q000648:ultrastructure*