Identification of several electrophoretic variants of human ceruloplasmin including CpMichigan, a new polymorphism

Two new electrophoretic variants of human ceruloplasmin (Cp) were detected in studies of a population from Ann Arbor, Mich., USA. The Cp Michigan variant occurs as a polymorphism in both Caucasians and Negroes while the Cp C-Ann Arbor-1 variant was identified in a single family. During reexamination of Cp variants previously detected among Amerindian tribes, a new variant Cp A-Wap-1 was identified in the Macushi and Wapishana tribes as being different from the variant observed in the Xavante and Cayapo tribes.