Proteolytic activities in deembryonated grains of wild-type and transgenic lines. A, Cathepsin L-/F-like CysProt activity. B, Cathepsin B-like CysProt activity. C, Trypsin-like Ser protease activity. Different letters indicate significant differences between lines for each time point (P < 0.05, honestly significant difference). Capital, small, and Greek letters are used for dry grains, 24 hai grains, and 72 hai grains, respectively.