title: A study on the calcium, potassium and sodium content of toad atria.
mesh_terms: D000818:Animals; D002024:Bufo marinus; D002118:Calcium / Q000032:analysis* / Q000378:metabolism; D002127:Calcium Isotopes; D004558:Electric Stimulation; D005260:Female; D006325:Heart Atria / Q000032:analysis*; D006335:Heart Injuries / Q000378:metabolism; D008297:Male; D008722:Methods; D011188:Potassium / Q000032:analysis*; D012964:Sodium / Q000032:analysis*; D013054:Spectrophotometry, Atomic
chemical_list: D002127:Calcium Isotopes; D012964:Sodium; D011188:Potassium; D002118:Calcium