The Journal of Experimental Medicine, Vol 102, 105-118,
Copyright, 1955, by The Rockefeller Institute for Medical Research New York
THE ANTIGENIC SIMILARITY OF HUMAN LOW DENSITY LIPOPROTEINS
Lawrence Levine Sc.D.1,
Dorothy L. Kauffman 1, and
Ray K. Brown M.D.1
1 From the Division of Laboratories and Research, New York State Department of Health, Albany
The following human low density lipoproteins were prepared: ß-lipoproteins of densities greater than 1.040 (A, B,C) a ß-lipoprotein of S1·063 = 5 (D), a lipoprotein of S1·063 = 19 (E), and a lipoprotein of S1·063 = 70 (F).
Data are presented which show the immunochemical homogeneity of the D lipoprotein rabbit-anti-D lipoprotein system.
Cross-reactions between antibody to A and D lipoproteins and the above lipoproteins have been demonstrated by quantitative precipitation, quanitative complement fixation, and single and double diffusion in agar.
The antigenic similarities appear to be associated with the protein portions of the molecule.
The antisera produced did not differentiate the low density lipoprotein classes.
Submitted on March 30, 1955