“…The sensitivity of adrenalectomized rats to phenylbutazone was increased by fasting for 24 hr before administration of the drug; this produced a further increase in the ulceration index and a decrease in the survival time after injection. An increased sensitivity of adrenalectomized rats to histamine is well known (Voegtlin & Dyer, 1924;Crivellari, 1927;Marmorston-Gottesman & Gottesman, 1928;Scott, 1928;Perla & Marmorston-Gottesman, 1931;Noble & Collip, 1941). There is some evidence that the increased histamine formation in situ (Schayer, 1962b) and the diminished resistance of the atrophied gastric mucosa in the adrenalectomized rats (Shay, Bralow, Kovarov & Kessler, 1962;Kyle, Clarke, Ward, Adesola & Welbourn, 1963) are responsible for the development of ulceration and death in these animals.…”