#1, they remain outside the target cell. #2, bind to the receptors inside the target cell. #3, they have no target cells. #4, are made of proteins.
Answer:
A: Pretty sure it's Red Cross
<span>Hi
HIV weakens the immune system. At a late stage, so it makes the body vulnerable to infections. It is transmitted sexually or through blood, or the pregnant woman to her child.
HIV is different from other viruses because it attacks the immune system, which normally role combat<span>.</span></span>
I think this may be false, I know at my old school we did a reach and stretch type flexibility test
