The intramuscular injection of animal protein factor concentrate to 5 cases of pernicious anemia in relapse, 4 cases of nutritional macrocytic anemia in relapse, and 3 cases of tropical sprue in relapse was followed by a positive hematologic response in each case as is illustrated in figures 1, 2, and 4, respectively. The parenteral administration of this material to 3 patients with nutritional glossitis unassociated with anemia was followed by the disappearance of the redness and soreness of the tongue.

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