Figure 3.

Probing (A and B) and feeding (C and D) times of P. papatasi feeding on the anterior forearm of humans not previously exposed to sand fly (A and C) or to forearms of humans displaying a DTH reaction to sand fly bite (B and D). Measurements were made in normal skin sites (●) or near (5 mm) skin sites where sand flies fed 22–26 h before (○). The graphs represent the rank order of the cumulative results using three volunteers displaying DTH response to the sand fly bite and three nonsensitized volunteers. A nonparametric Kruskal–Wallis test gave the P values shown in the graphs. NS, nonsignificant results.