| Abstract: | Abstract. A new antibody, named anti-Lu4, has been discovered, that reacts with a high frequency red cell antigen. The antibody does not react with dominant or recessive Lu(a-b-) red cells or with the red cells of the propositus and two of her five siblings. Because the propositus and her sibs are all Lu(a-b+), anti-Lu4 cannot be the same as anti-LuaLub. Attempts to identify a low frequency allele to Lu4 were unsuccessful. The results suggest that Lua, Lub and Lu4 have a common precursor. |
