Abstract This update of the Cromer (CROM) blood group system (Storry JR, Reid ME, Yazer MH. The system: a review. Immunohematology 2010;26:109–17) includes additional variants to (ISBT021), both new antigens and molecular bases underlying null phenotype. molecule on which are carried, CD55 (DAF), is an important receptor for malaria parasite, Plasmodium falciparum, role in health disease contin...