For a mosquito to transmit a disease like Dengue fever or Zika, the virus that causes the disease first has to reproduce in the mosquito’s gut and then travel to its saliva glands. Will Stone, a graduate student in the Intramural Research Program at the National Institutes of Health, keeps mosquitos’ stomachs and saliva glands alive outside their bodies to create ‘zombie’ mosquitos that allow him to study how the Dengue virus gets from one to the other and what happens to it when it exits a