To date, four types of HTLVs (human T-lymphotropic virus 1 [HTLV-I], human T-lymphotropic virus 2 [HTLV-II], HTLV-III, and HTLV-IV) and four types of STLVs (STLV-I, STLV-II, STLV-III, and STLV-V) have been identified. HTLV types HTLV-1 and HTLV-2 viruses are the first retroviruses which were discovered. Both belong to the oncovirus subfamily of retroviruses and can transform human lymphocytes so that they are self-sustaining in vitro.
The goal keeper must wear a jersey distinguishable from his team and the opposing team. This is almost always interpreted to mean he must wear a different color.he goal keeper must wear a jersey distinguishable from his team and the opposing team. This is almost always interpreted to mean he must wear a different color.
Unlike field players, goalies are allowed to use any part of their body like their hands and feet as well as their hockey stick to stop the ball. Goalies only have one job and that is to protect the goal. Even so, their job is the most important and they have to stop the ball at all costs.