The Real Alien Threat (Apocalypse)
This is the true reason for the invasion. Micronoids are an intelligent psionic micro-organism that live in the bloodstream of a host body and control it psionically. This finally explains how brainsuckers work and how the aliens are able to gain control of human organisations. This research topic allows for the creation of Toxin C, the most POWERFUL toxin in the game! Yes! This is exactly what you've all been waiting for... except that you have to research EVERYTHING in order to get it, just short of the Queenspawn and the Overspawn. The requirements, in full, are as follows:Anthropod & Anthropod Autopsy & Spitter & Spitter Autopsy & Skeletoid & Skeletoid Autopsy & Popper & Popper Autopsy & Megaspawn & Megaspawn Autopsy & Micronoid & Micronoid Autopsy & Psimorph & Psimorph Autopsy & Toxin B. Finally!
Official Entry: "It is now clear to us that the Micronoid organisms are the source of the Alien intelligence and they are using the various Alien forms to initiate an assault on our dimension. The large Alien life forms cannot survive in our dimension - the Micronoids must transfer to a new host in order to conquer our world and the ideal host is our own race. Brainsuckers are used to introduce Micronoids into the human bloodstream which then gain control of the brain and have access to all the knowledge and abilities of the host. We now understand the physiology of the Micronoids sufficiently in order to develop a specific toxin that will kill the organisms in the bloodstream."