FIGURE 6.
Distribution of apolipoproteins A-I, B, and A-V among yolk sac-derived lipoprotein fractions. 35S-Labeled lipoproteins secreted by YS tissue were isolated and fractionated as described under “Experimental Procedures” and subsequently were immunoprecipitated (IP) with the indicated respective antisera/antibodies under detergent-free conditions. Equal amounts of isolated lipoprotein fractions were precipitated with TCA as described under “Experimental Procedures.” Autoradiography was performed after 4–18% SDS-PAGE of the precipitates.