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[9]
Apple ( Malus pumila ) procyanidins fractionated according to the degree of polymerization using normal-phase chromatography and characterized by HPLC-ESI/MS and MALDI-TOF/MS.[J].Toshihiko Shoji;Saeko Masumoto;Nina Moriichi;Tomomasa Kanda;Yasuyuki Ohtake.Journal of Chromatography A.2006, 1