Helander, E Studies of the chemical components of the conducting system of the heart. I. The water, mineral and nitrogenous components. [electronic resource] - Cardiologia 1965 - 14-24 p. digital Publication Type: Journal Article ISSN: 0366-5313 Standard No.: 10.1159/000168375 doi Subjects--Topical Terms: AnimalsCattleChemistry Techniques, AnalyticalFetal Heart--anatomy & histologyHeart--anatomy & histologyHeart Conduction System--anatomy & histologyMineralsNitrogenWater