CHANGING FACE An immunodeficient man has been excreting live poliovirus for 28 years. His viral strains differ from the one he received in a vaccine. A simulated virus particle shows some of these changes, in surface regions (red) that interact with human immune proteins and elsewhere (blue).
Psychopaths often don’t fit movie stereotypes, but they share particular characteristics. New research shows that, contrary to popular thought, cognitive behavioral therapy can help some psychopaths stay out of prison.