The rarest blood group in the world is Rh-null. Learn about its unique characteristics, compatibility challenges, and the ...

When a pregnant woman had her blood sampled back in 1972, doctors discovered it was mysteriously missing a surface molecule ...

In a groundbreaking discovery, researchers have identified a new human blood group system, named MAL, stemming from a 1972 ...

It is designated as Rh-null by scientists. Blood consists of various molecules, including proteins or blood group antigens.

While Rh and ABO are the most common blood groups, MAL is different from them, due to an absence of an antigen called AnWj.

Agosti Romero, L, Ikin, Elizabeth W, and Mourant, A E. 1950. Les groupes sanguins ABO MNS et Rh des Galiciens. Rev Hemat, 5, 325–328. Chalmers, J N M, Ikin ...

Background: Transfusion-dependent bone marrow transplant recipients are routinely transfused with ABO group and RhD-compatible ... Transfusion of RhD-positive blood components to Rh-negative ...