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SDS-PAGE separation protein profiles for egg yolk after silver staining. Hen eggs were obtained after feeding the hens with soy, lupine or without adding legumes: S—soy for 21 days; C—control without legumes; L2—lupine for 2 days; L21—lupine for 21 days; TT—1% Tween 20 + 0.4% Triton x-100; TN—1% Tween 20 + 0.4% Triton X-100, 280 mM NaCl, 40 mM NaH2PO4, pH 7.4, MW—molecular weight marker.
