NAKAMURA,Takashi;SATO,Katsuyuki;AKIBA,Mitsuo;OHNISHI,Masao(2006).“Urobilinogen, as a Bile Pigment Metabolite, Has an Antioxidant Function”.Journal of Oleo Science55(4): 191–197.doi:10.5650/jos.55.191.ISSN1345-8957.
NAKAMURA,Takashi;SATO,Katsuyuki;AKIBA,Mitsuo;OHNISHI,Masao(2006).“Urobilinogen, as a Bile Pigment Metabolite, Has an Antioxidant Function”.Journal of Oleo Science55(4): 191–197.doi:10.5650/jos.55.191.ISSN1345-8957.