The development of cardiac rate regulation in preweanling rats.
D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D001285:Atropine / Q000494:pharmacology; D001831:Body Temperature; D001835:Body Weight; D004777:Environment; D005260:Female; D006120:Grooming; D006234:Handling, Psychological; D006339:Heart Rate; D006702:Homing Behavior; D008297:Male; D008722:Methods; D009068:Movement; D011433:Propranolol / Q000494:pharmacology; D051381:Rats; D013216:Reflex, Startle; D012737:Sex Factors
D001285:Atropine; D011433:Propranolol