Fig. 2From: Vectra 3D (dinotefuran, pyriproxyfen and permethrin) prevents acquisition of Borrelia burgdorferi sensu stricto by Ixodes ricinus and Ixodes scapularis ticks in an ex vivo feeding modelEngorgement status of adult Ixodes ticks on the silicone membrane following 4Â days of tick feeding. a Group of partially engorged I. scapularis females; example of males considered attached and semi-engorged are indicated with yellow arrows. b Semi-engorged females I. ricinus. c, d Outside view of the adult tick hypostomes perforating the silicone membrane, indicated with red arrowsBack to article page