Assertion: vitamin b12 | /r/HasProperty | alexander r. todd
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text: In the English Wikipedia articles on Pernicious anemia and Vitamin B12 it is claimed that it was Alexander R. Todd who - simultaneously with the American Karl Foster - first isolated vitamin B12 in 1948, while most other available sources say that it wasn't Todd, but the British Lester Smith, who worked at the same time for Glaxo Laboratories.