title: Intragastric and intracardial injections in newborn rats. Methodical investigation. Short communication.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D005260:Female; D006321:Heart; D007267:Injections / Q000662:veterinary*; D008297:Male; D008722:Methods; D051381:Rats; D013270:Stomach