A series of 200 normal serum samples obtained from healthy blood donors belonging to different religious communities and castes were examined for transferrin phenotypes by vertical polyacrylamide gel electrophoresis. Of these, 196 showed the common CC phenotype, while 4 showed CD phenotype, without any correlation with the caste or community. In another study involving 102 cases of malignancy, no relationship was observed between the transferrin phenotype and the type of malignancy, except in the case of Hodgkin's disease, which showed B2C phenotype.