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Representative chromatograms of the fractions containing free steroids from diethyl ether extracts obtained from control and cadmium-treated roots of marigold plants after 14 days of cultivation: 1, cholesterol; 2, campesterol; 3, stigmasterol; 4, sitosterol; 5, sitostanol; 6, β-amyrin; 7, α-amyrin; 8, tremulone; 9, sitostenone; 10, cycloartenol acetate; 11, friedelinol; 12, friedelin; 13, stigmastane-3,6-dione.
