Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAKAGAWA Itsiro and SASAKI Atsuko,"Effect of an excess intake of leucine, with and without additions of vitamin B6 and/or niacin, on tryptophan and niacin metabolism in rats.",Journal of Nutritional Science and Vitaminology,03014800,Center for Academic Publications Japan,1977,23,6,535-548,https://cir.nii.ac.jp/crid/1390001206325413888,https://doi.org/10.3177/jnsv.23.535