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李基寧,李根培,李春寧,全鉉五 서울대학교 1958 서울대학교 論文集 Vol.7 No.-
Vitamin B_12 contents of a variety of conventional Korean foods were bioassayed employing Euglena gracilis. On the basis of fresh weight animal organs and fremented sea foods are excellent sources of vitamin B_12. Several foods of plant origin were found to be fair sources of the vitamin B_12.