Fig. 6
From: Transmission mechanisms of an emerging insect-borne rickettsial pathogen

Dissections of cat flea midguts exposed to fluorescent latex beads. a Donor cat flea with fluorescent beads (arrows) after 1 day post-exposure to an “infectious” bloodmeal; b Recipient cat flea with fluorescent beads (arrow) after 1 day of co-feeding with donor cat fleas