RT Journal Article SR Electronic T1 SALINE PERFUSION OF THE RESPIRATORY CENTER IN FROGS: THE EFFECT OF CALCIUM CHLORIDE AND POTASSIUM CHLORIDE JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 443 OP 451 VO 4 IS 5 A1 HOOKER, D. R. YR 1913 UL http://jpet.aspetjournals.org/content/4/5/443.abstract AB