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Expression of α1, β1 and β3 protein subunits of Na+/K+-ATPase in enamel organ of rat incisors. Western blot analyses are shown using protein extracts from secretory (S), early maturation (EM), and late maturation (LM) stages of rat enamel organ epithelial cells and antibodies recognizing α1, β1, β3, and Actb (β-actin; a loading control). Protein weight marker in kDa is indicated on the left.
