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.
There are four main player positions on a Lacrosse team: defenseman, midfielder, attackman, and goalkeeper. Defender: Lacrosse defenders protect the goal. It is their job, together with the goalie, to make sure the opponent does not score a goal. Defenders often use a longer lacrosse stick to allow them to block or deflect passes and shots. They must try to stay between the attacker and the goal and prevent the attacker from getting off a clean shot on goal. Working together and communication with other defenders is key in forming a good defense.