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Sterol analysis. Campesterol, stigmasterol and sitosterol (µg mg−1 protein) (A), total sterols (µg mg−1 protein) (B) and stigmasterol/sitosterol ratio (C) in plasma membrane (PM) and detergent-resistant membranes (DRMs) isolated from broccoli roots control and treated with NaCl. Data are means ± SE (n = 3). Analyses were done with three biological samples. Columns with different letters (a, b, c) for each variable differ significantly according to Tukey’s test (p < 0.05).
