Usually, antibodies are your buddies -- immune cells that kill invaders. But New York University docs recently hunched that antibodies that bind to HIV protein gp120 not only don't help the anti-HIV cause -- they hinder it by "hiding" HIV from detection by the immune system. In their study, HIVers with mucho gp120 antibody saw faster disease progression than those with little. Still, study head Catarina Hioe, PhD, said that's just one factor in progression -- and in the HAART-less, no less.