HALL, E K Acetylcholine and epinephrine effects on the embryonic rat heart. [electronic resource] - Journal of cellular and comparative physiology Apr 1957 - 187-200 p. digital Publication Type: Journal Article ISSN: 0095-9898 Standard No.: 10.1002/jcp.1030490203 doi Subjects--Topical Terms: Acetylcholine--pharmacologyAnimalsEpinephrine--pharmacologyHeart--drug effectsRats