[问题求助] 求助三篇英文文章 序号：1 标题：Preparation and Properties of Beef Pancreas Microsomal Fraction 作者：Sherman R. Dickman, James T. Madison, Robert L. Holtzer 期刊：Biochemistry, 1962, 1 (4), pp 568–574
序号：2 标题：Density Gradient Centrifugation: A New Separation Technique 作者：Myron K. Brakke 期刊：J. Am. Chem. Soc., 1951, 73 (4), pp 1847–1848
序号：3 标题：Methods for the isolation of particulate components of the cell 作者：Burns, R. H., and Staufier, J. F., 期刊：Manometric techniques and tissue metabolism, p. 148-155, second edition, Minneapolis, 1949.
序号：4 标题：Some quantitative analyses of the particulate fractions from mouse liver cell cytoplasm. 作者：BARNUM C P, HUSEBY R A. 期刊：Arch Biochem. 1948 Oct;19(1):17-23
序号：5 标题：Protoplasm: endoplasmic reticulum and microsomes and their properties 作者：Siekevitz, P 期刊：Annual Review of Physiology,25(1), 1963 , 15
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