RT Journal Article SR Electronic T1 THE SITE OF ACTION OF CAFFEINE AS A RESPIRATORY STIMULANT JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 458 OP 463 VO 57 IS 4 A1 D. H. LEMESSURIER YR 1936 UL http://jpet.aspetjournals.org/content/57/4/458.abstract AB