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Polyacrylamide gel electrophoresis of cell wall protein from Cervil, Levovil and VilB tomato cultivars: 40 μg protein samples were loaded on 13% acrylamide SDS–PAGE gels. Gels were stained with coomassie colloidal (see experimental body). Protein markers used were: phosphorylase (97 kDa), BSA (66 kDa), egg albumin (45 kDa), carbonic anhydrase (30 kDa), trypsin inhibitor (20 kDa) and α-lactalbumin (14 kDa).
