title: Observations on the number of available C antigen sites on red cells.
abstract: The number of available C (rh', Rh 2) antigen sites within the Rh system was estimated using trace-labelled antibody. The results, as available sites per red cell, were as follows: CDe/CDe: 45,700-56,400; Cde/Cde: 42,200; CDe/cDE: 25,500-39,700; CwDe/cde: 21,500-40, 000; Cde/cde: 31,100; CDE/cDE: 8,500-9,800; Cde/cde: 7,200. The average equilibrium constant of the anti-C was 0.5 X 10(7) M-1.
mesh_terms: D005838:Genotype; D006801:Humans; D012204:Rh-Hr Blood-Group System
chemical_list: D012204:Rh-Hr Blood-Group System