image: Phlebotomus duboseqi (sand fly) infected with Leishmania major parasites expressing red fluorescent protein. This image accompanied the report "Demonstration of Genetic Exchange During Cyclical Development of Leishmania in the Sand Fly Vector," by N. S. Akopyants and colleagues appearing in the April 10, 2009, issue of Science. view more
Credit: Image copyright <i>Science</i>-AAAS