Dr. Luc Montagnier, co-discover of the Human immunodeficiency virus (HIV), arrives for a news conference at the National Press Club in Washington May 8, 2009. Montagnier and Dr. Robert Gallo, co-discover of HIV, on Friday called for a renewed intensity in HIV/AIDS research worldwide. REUTERS/Yuri Gripas (UNITED STATES HEALTH SCI TECH HEADSHOT)