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Two-dimensional SDS/PAGE of mitochondrial proteins from fertile T and CMS plants. (a and b) Coomassie blue staining of T leaf (a) and T pollen (b). (c and d) Silver nitrate staining of T (c) and CMS I (d) mature pollen collected during summer in the greenhouse. A and B, α and β subunits, respectively, of mitochondrial ATPase. R1, additional β subunit specific to pollen (14).
