Fig. 1.
Recovery of infectious VZV from astronaut saliva. Human lung fibroblast cells cultures were inoculated with saliva from astronauts obtained on day 2 after landing. Typical herpesvirus plaques were seen in cultures inoculated with saliva from subjects 1 and 2, but not with saliva from subject 3. The plaques stained with anti-VZV antibody, but not with anti-HSV-1 antibody (not shown). magnification bar = 0.2 mm.