1 Innate immune responses control influenza virus replication during the early stages of infection. 2  Adaptive immune responses are antigen-specific and develop immunological memory that provides a more rapid response upon re-exposure to the virus.
The Leaning Tower of Pisa is a freestanding bell tower located in the city of Pisa in Italy. Like its name suggest, it actually does lean to one side. The tower started to lean during construction because the foundation was built on soft ground that had difficulty supporting the weight.t was built as a freestanding bell tower for the cathedral in Pisa. On the side where the tower is lower because of the lean it stands at 187.27 feet. On the high side of the tower it stands at 186 feet. The tower weighs about 14,500 tons.
Leaning Tower of Pisa. The Leaning Tower of Pisa is one of the most remarkable architectural structures from medieval Europe. It is located in the Italian town of Pisa, one of the most visited European cities. Tower of Pisa stands at 60 metres and until 1990 was leaning at about a 10 degree angle.