The A blood type has only the A antigen and the B blood type has only the B antigen. The AB blood type has both A and B antigens, and the O blood type has neither A nor B antigen. By the time you are six months old, you naturally develop antibodies against the antigens your red blood cells lack.
Spain's football league is extremely competive and features many of the world's best players. While Real Madrid and FC Barcelona have run the show for much of La Liga's history, in recent years they have been met with top-notch competition from teams such as the Deportivo de La CoruÃ±a and Valencia CF. La Liga: Season-long tournament between the teams of Spain's top football division.
Some of the oldest football clubs in all of Italy are from Sicily: the three most successful are Palermo, Messina, and Catania, who have all, at some point, played in the Serie A. To date no club from Sicily has ever won Serie A, but football is still deeply embedded in local culture and all over Sicily most towns have a representative team.