[Some questions on the quantitative determination of serum vitamin B12 by means of Escherichia coli].
D045728:Corrinoids; D004926:Escherichia coli; D006397:Hematinics; D006801:Humans; D014805:Vitamin B 12 / Q000097:blood*
D045728:Corrinoids; D006397:Hematinics; D014805:Vitamin B 12
ESCHERICHIA COLI; VITAMIN B12/in blood
Nekotorye voprosy kolichestvennogo opredeleniia vitamina B12 v syvorotke krovi pri pomoshchi B. coli.