'Promiscuous parasites' hijack host immune cells
Tuesday, September 20, 2011 - 15:00
in Health & Medicine
Toxoplasma gondii parasites can invade your bloodstream, break into your brain and prompt behavioral changes from recklessness to neuroticism. These highly contagious protozoa infect more than half the world's population, and most people's immune systems never purge the intruders.