In the article by Miller et al entitled “Transcobalamin II 775G > C polymorphism and indices of vitamin B12 status in healthy older adults,” which appeared in the July 15, 2002, issue ofBlood (Volume 100:718-720), an incorrect reverse primer for the polymerase chain reaction was listed in “TCII genotyping.” The correct reverse primer is 5′-TAG-GTC-TTG-TGG-TTC-AGA-ACG-3′.

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