Autoimmune disease is the result of the body's immune system targeting and attacking its own tissues in the same way that it would normally tackle infection. The tissues affected become inflamed and damaged.
The city of Venice is a major center of culture and tourism in Italy, a country in southeastern Europe. It is famous for its beautiful canals, palaces, and art. The city is built on more than 100 small islands.
Get a taste of Venice with this guided full-day trip from Milan. See the main sights in Venice, including St. Mark's Square, the Basilica of St. Mark's, the Grand Canal. Il Fenice opera house, the Rialto Bridge and the Doge's Palace. Learn about the history of each place you visit.