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Representative images of two-dimensional gel electrophoresis (2-DE) gel of proteins extracted from the leaves Rosa hybrida ‘Rock Fire’ of control (A), Si (B), NaCl (C) and Si+NaCl (D) treatments, respectively. Differentially-expressed spots excised for the identification of the proteins by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) are marked by the arrows.
