Int J Anal Bio-Sci 　Print edition: ISSN 2187-7912 　Online edition: ISSN 2187-7920 　CODEN: IJABGQ 　　 　 Copyright © 2014, International Journal of Analytical Bio-Science Online by the Society of Analytical Bio-Science.The person using Int J Anal Bio-Sci Online may view, reproduce, or store copies of articles comprising the journal provided that the articles are used only for their personal. Volume 9, Issue 1, 2021 Vitamins as markers of nutrition: What vitamers do we measure? Sachiko Kiuchi, Hiroshi Ihara, Yoshikazu Nishiguchi, Noriko Ishihara, Nobue Ito, Takeyoshi Murano, Hiromitsu Yokota, Naotaka Hashizume Int J Anal Bio-Sci, 31 March 2021, 9 (1): 1-6 Simple phenol oxidase activity assay method based on a signal accumulation type of ion-sensitive field-effect transistor Yoshiaki Nishiya, Miyu Ueda, Yuka Yamashita, Naohiro Tomari, Yoshihiro Yamamoto Int J Anal Bio-Sci, 31 March 2021, 9 (1): 7-13 Google Schol