title: Freehand cerebroventricular injection technique for unanesthetized rats.
mesh_terms: D000818:Animals; D001345:Autoradiography; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D002247:Carbon Isotopes; D002404:Catheterization; D002552:Cerebral Ventricles; D002794:Choline / Q000008:administration & dosage; D007267:Injections; D008722:Methods; D051381:Rats
chemical_list: D002247:Carbon Isotopes; D002794:Choline