Apicomplexan life cycle: 1-merozoites, 2-gametes, 3-zygote, 4-sporozoites.
<a href="//commons.wikimedia.org/wiki/User:Franciscosp2" title="User:Franciscosp2">Franciscosp2</a>
2007-08-31
self-made (using <a rel="nofollow" class="external text" href="http://www.xfig.org">xfig</a> and Linux).