Blood groups

In 1901 Karl Landsteiner discovered four blood groups that are A, B, AB and 0. That ones are the ones that we had been using for something like one century. Bryan Ballif researcher at the University of Vermont had discovered two more proteins that are related with blood groups. But recently scientifics had found 32 different groups of blood. So scientifics are saying that blood groups could be like prints because there's one type of print for everybody and they're saying it could be one blood group for every person. Some proteins are related with being resistant to medicines. We will see what happens in the future but it's clear that there are a lot of things to discover about blood groups at the moment.