The K Blood Group System of the Pig

Gene interaction and the A‐0 and H blood‐group systems in pigs

“…The A-0 system of blood groups in pigs is analogous in some ways to the R -0 system of sheep and the ABO system in man (Andresen, 1962;Rasmusen, 1964;Saison and Ingram, 1962), and genetic studies have shown that at least two gene loci are involved in expression of A and 0. Results of classification of red blood cells of pigs for A and 0 and also for the Ha factor (Andresen and Wroblewski, 1961) indicate that alleles at the locus for the H blood-group system are involved in determination of phenotypes for A and 0.…”

Further contribution to the H blood group system in pigs

“…The Ha reagents react also with Hb-positive RBC almost on each occasion and have to be absorbed with them. The haemolysins are more specific but the similar serological relation between H a and Hb antigens was also described (Andresen & Wroblewski, 1961). Usually, Hc reagents cross-react with Hd antigen.…”

“…Originally the H system included only one blood factor (Andresen, 1957), similar to most of the blood group systems. After the Hb factor had been discovered, the system had 3 alleles, Ha, Hb and H - (Andresen & Wroblewski, 1961). The fourth allele, Hob, was revealed in Black and White pigs of Danish origin by Brauner-Nielsen (1962).…”

The blood group factor Kf and allele Kae in the pig

“…Blood factor K (later designated Ka) was detected by Andresen in 1957. The contrasting factor, Kb, was originally detected by heteroimmune, antibodies prepared in rabbits (Andresen & Irwin, 1959). Similarly, the antibody detecting antigen Kc, common to Ka-and Kb-positive erythrocytes, was obtained .…”