Qualitative and Quantitative Analyses of Sialyl <i>O</i>-Glycans in Milk-Derived Sialylglycopeptide Concentrate oleh Junichi Higuchi, Masaki Kurogochi, Toshiyuki Yamaguchi, Noriki Fujio, Sho Mitsuduka, Yuko Ishida, Hirofumi Fukudome, Noriko Nonoyama, Masayuki Gota, Mamoru Mizuno, Fumihiko Sakai