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Titration of citrate synthase (CS) with the antibody (A). Immunoblot analysis of the rat liver (L) with 4 μg of protein, the interstitial tissue (I) with 1 μg of protein, and seminiferous tubules (S) with 1 μg of protein (B). Note the single bands (arrowhead) in three types of homogenates at the same mobility.
