Effects of different concentrations of sodium, potassium & calcium on the rate of heart beat of madiera cockroach, leucophaea maderae fabr.
D000818:Animals; D001001:Anura; D005221:Fatigue / Q000201:enzymology*; D009132:Muscles / Q000201:enzymology*; D010088:Oxidoreductases / Q000378:metabolism*
D010088:Oxidoreductases