Studies on the transfer of human delayed-type hypersensitivity. I. Partial purification and characterization of two active components.

Summary null Two fractions from tuberculin hypersensitive human white blood cells have been found capable of transferring tuberculin delayed hypersensitivity. One of these (C′-5) is a polynucleotide containing adenine, guanine and cytosine, but no uracil. The second transfer factor is contained in a larger molecular weight (A′) fraction found to have γG-globulin and other globulin and probably α 1 null lipoprotein as well as ribose indicating...