title: Perinatal modification of the surface area of myocardial cell; its implication in the relaxation of contraction in the frog and rabbit [proceedings].
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001001:Anura; D002118:Calcium / Q000502:physiology; D002452:Cell Count; D066298:In Vitro Techniques; D009200:Myocardial Contraction; D009206:Myocardium / Q000166:cytology; D011817:Rabbits; D012508:Sarcolemma / Q000502:physiology; D012964:Sodium / Q000502:physiology
chemical_list: D012964:Sodium; D002118:Calcium