title: Quantitative evaluation of marine protein contribution in ancient diets based on nitrogen isotope ratios of individual amino acids in bone collagen: an investigation at the Kitakogane Jomon site.
authors.affiliation: Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa, Chiba 277-8562, Japan.
authors.forename: Yuichi I
authors.initials: YI
authors.lastname: Naito
authors.forename: Noah V
authors.initials: NV
authors.lastname: Honch
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Chikaraishi
authors.forename: Naohiko
authors.initials: N
authors.lastname: Ohkouchi
authors.forename: Minoru
authors.initials: M
authors.lastname: Yoneda