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.
Calcio Catania. Calcio Catania is an Italian football club founded in 1908 and based in Catania, Sicily. They compete in Lega Pro, the third tier of the Italian football league system, and host home games at the Stadio Angelo Massimino.