In 2011, biologists at the California Institute of
Technology (Caltech) demonstrated a highly effective method for delivering
HIV-fighting antibodies to mice—a treatment that protected the mice from
infection by a laboratory strain of HIV delivered intravenously. Now the
researchers, led by Nobel Laureate David Baltimore, have shown that the same
procedure is just as effective against a strain of HIV found in the real world,
even when transmitted across mucosal surfaces.