Diagram of the HIV virus.
US National Institute of Health (redrawn by en:User:Carl Henderson)
2005-06-03
<p>US National Institute of Health (redrawn by en:User:Carl Henderson)
</p>
<ul><li><a rel="nofollow" class="external free" href="https://web.archive.org/web/20050531012945/http://www.niaid.nih.gov/factsheets/howhiv.htm">https://web.archive.org/web/20050531012945/http://www.niaid.nih.gov/factsheets/howhiv.htm</a></li>
<li><a rel="nofollow" class="external free" href="https://web.archive.org/web/20041119131214/http://www.niaid.nih.gov/factsheets/graphics/howhiv.jpg">https://web.archive.org/web/20041119131214/http://www.niaid.nih.gov/factsheets/graphics/howhiv.jpg</a></li></ul>