- Human monoclonal macroglobulins with specificity for Klebsiella K polysaccharides that contain 3,4-pyruvylated-D-galactose and 4,6-pyruvylated-D-galactose. Kabat, E.A., Liao, J., Bretting, H., Franklin, E.C., Geltner, D., Frangione, B., Koshland, M.E., Shyong, J., Osserman, E.F. J. Exp. Med. (1980)