FEDERICO DIÉZ RIVAS, M.D.; RAMÓN M. SUÁREZ, M.D., F.A.C.P.; FEDERICO HERNÁNDEZ MORALES, M.D., F.A.C.P.; ENRIQUE PÉREZ SANTIAGO, M.D.
This content is PDF only. Please click on the PDF icon to access.
Three years ago, Shorb1 discovered a new factor in refined liver extracts that was highly potent in promoting growth of the microörganism Lactobacillus lactis Dorner. Using the microbiologic method of Shorb, Riches2 et al. isolated a pure crystalline compound from liver and designated it vitamin B12. West3 proved that this substance possessed the property of inducing a hematopoietic response in patients with pernicious anemia in relapse. At about the same time, Smith4 in England announced the isolation of a factor apparently identical to vitamin B12.
Crystalline vitamin B12 occurs as dark red needles. On a weight-for-weight
RIVAS FD, SUÁREZ RM, MORALES FH, et al. THE ORAL ADMINISTRATION OF VITAMIN B12 IN TROPICAL SPRUE1. Ann Intern Med. 1952;36:583–591. doi: 10.7326/0003-4819-36-2-583
Download citation file:
Published: Ann Intern Med. 1952;36(2_Part_2):583-591.
Celiac Disease and Malabsorption, Gastroenterology/Hepatology.
Results provided by:
Copyright © 2019 American College of Physicians. All Rights Reserved.
Print ISSN: 0003-4819 | Online ISSN: 1539-3704
Conditions of Use