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SDS-PAGE and protein identification of each sample. a Samples (5 μg/lane) from pellicle, GCF, parotid gland, and mixed gland, were analyzed on SDS-PAGE (15% acrylamide). b Proteins in the major bands(1–13)were identified by mass spectrometry. The bands from the gel were punched out and analyzed by LC–MS/MS. Pellicle, GCF, parotid saliva, and mixed gland saliva contained 11, 10, 9, and 9 of the 13 proteins identified, respectively
