J. N. HARRIS-JONES, H. T. SWAN, G. R. TUDHOPE; Pernicious Anemia without Gastric Atrophy and in the Presence of Free Hydrochloric Acid : Report of a Case. Blood 1957; 12 (5): 461–468. doi: https://doi.org/10.1182/blood.V12.5.461.461
A case is described of Addisonian pernicious anemia in a girl aged 16 years, associated with a normal gastric mucosa and free hydrochloric acid in the stomach. Partial, but significant deficiency of intrinsic factor activity was demonstrated in her gastric juice by the use of Co56-labeled vitamin B12.