After 50 years, scientists discover the MAL blood grouping system, solving a genetic mystery and improving transfusion safety worldwide.

Scientists uncovered how ancient blood groups helped Homo sapiens as compared to Neanderthals in their survival and spread ...

There are 35 blood groups in the world, but the two most common groups are ABO group and Rh group. These groups contain the eight blood types that dominate over 90% of the world's population.

This is also the case for the new blood group. "The work was difficult because the genetic cases are very rare," explained Tilley. Previous research found more than 99.9 percent of people have the ...