title: Miniature transmitters for heart rate measurements in groups of unrestrained rats.
mesh_terms: D000818:Animals; D004562:Electrocardiography; D004566:Electrodes; D004777:Environment; D005106:Exploratory Behavior; D006234:Handling, Psychological; D006339:Heart Rate / Q000187:drug effects; D007545:Isoproterenol / Q000494:pharmacology; D010827:Physiology / Q000295:instrumentation*; D011603:Psychophysiology; D051381:Rats; D013686:Telemetry / Q000295:instrumentation*
chemical_list: D007545:Isoproterenol