Abstract This update of the Ok (OK) blood group system (Smart EA, Storry JR. The OK system: a review. Immunohematology 2010;26:124–6) focuses on new information role basigin (BSG), carrier molecule antigens. No further antigens have been identified since original However, BSG in malaria continues to be explored. 2021;37:18–19.

Background: The ABO blood group antigens play a role in thepathophysiology of some diseases and several researches haveinvestigated this relationship in the field of dermatology. In thepresent study, an attempt was made to find the distribution ofblood types in patients with pemphigus vulgaris and chronicplaque type psoriasis.Method: Fifty patients with chronic plaque type psoriasis, 50patients...

Recognition and application of blood group differences on human red cells permitted the development of safe procedures for blood transfusion. Blood group antigens are markers on surface-exposed red cell proteins or the sugar moiety of glycoproteins or glycolipids. Apart from their presumed biological function, some antigens have been identified as receptors for host/parasite interactions. Thus,...

Rh-positive erythrocytes were enriched and depleted of membrane cholesterol, and the mediated change in the degree of exposure of the D antigens was determined by fluorescence-activated cell sorting, using indirect fluorescent antibody labeling. The results are compatible with a model in which the expression of the D antigens can be modulated significantly by the lipid microviscosity (eta). At ...

Tumor progression is often associated with altered glycosylation of the cell-surface proteins and lipids. The peripheral part of these cell-surface glycoconjugates often carries carbohydrate structures related to the ABO and Lewis blood-group antigens. The expression of histo-blood-group antigens in normal human tissues is dependent on the type of differentiation of the epithelium. In most huma...

History and nomenclature The Rh system is second only to the ABO system in importance in transfusion medicine because Rh antigens, especially D, are highly immunogenic and cause hemolytic disease of the fetus and newborn (HDFN) and hemolytic transfusion reactions (HTRs). HDFN was first described by a French midwife in 1609 in a set of twins, one of whom was hydropic and stillborn, whereas the o...

Norovirus (NoV), a member of the family Caliciviridae, is a major cause of acute water- and food-borne nonbacterial gastroenteritis and forms antigenically diverse groups of viruses. Human NoVs are divided into at least three genogroups, genogroups I (GI), GII, and GIV, which contain at least 15, 18, and 1 genotypes, respectively. Except for a few genotypes, all NoVs bind to histo-blood group a...