In 1956, the JCI published a paper by Richard Havel, Howard Eder, and Joseph Bragdon on a method using an ultracentrifuge to physically separate plasma lipoproteins and chemical methods to analyze their lipid constituents. This paper has been much cited (7081 times as of this writing) in part because it represents a solid method that, with various modifications, has been applicable for the study of lipoproteins for almost half a century.
