[Frequency of C W antigen]

In this paper frequency of CW antigen is given. We observed 1126 persons where total Rh phenotype was examinated, and found 40 CW + with frequency of 3, 5%. These phenotypes are found: CWcD-ee 15--1, 31% CWcD-ee 21--1, 84% CWcD-Ee 4--0, 35%, but not rare. We present corellation between our results and literature.