Fig. 3From: Transmission mechanisms of an emerging insect-borne rickettsial pathogenDissemination of Rickettsia to flea salivary glands. a No rickettsial antigen is present at 1 dpe to an R. felis-infected bloodmeal; b Presence of rickettsial antigen (labeled green, indicated by arrows) at 28 dpe to an R. felis-infected bloodmeal (positive control)Back to article page