—These articles and those in the previous two numbers ofThe Journalare part of a series published under the auspices of the Council on Pharmacy and Chemistry. Other articles will appear in succeeding issues ofThe Journal.—Ed.In 1928-1929 Stricker and Grüter demonstrated that a factor essential to lactogenesis is associated with the anterior pituitary. They did not identify or find other associations of the lactogenic principle ; but crude saline and alkaline extracts were shown to initiate milk secretion in suitable rabbits, bitches, sows and cows—some of which were previously castrated. Their results were soon confirmed and further extended to rats, guineapigs and goats by Corner, Evans and Simpson, Nelson and Pfiffner, Turner and Gardner, Asdell and others. Also in these confirmatory studies—and in those of Riddle and Braucher on the crop-gland response—simple extracts
RIDDLE O. THE LACTOGENIC FACTOR OF THE PITUITARY. JAMA. 1935;104(8):636–637. doi:10.1001/jama.1935.92760080005009
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