If we ask anyone about their blood group, we are quite familiar with hearing the names A, B, AB or 0 and whether these groups are negative or positive. But these are only the most common categories. What about the others?
If we ask anyone about their blood group, we are quite familiar with hearing the names A, B, AB or 0 and whether these groups are negative or positive. But these are only the most common categories. What about the others?