Cold lymphocytotoxins. Chromatographical study

A chromatographical study was made of eight antisera containing either anti-HL-A antibodies, cold lymphocytotoxins, or a mixture of both types of antibodies. The results vary according to the sera obtained. Usually cold lymphocytotoxins are sited in the IgM peak and anti-HL-A antibodies in the IgG peak, but there are some sera where anti-HL-A reactivity is IgM and cold lymphocytotoxic reactivity is IgG.