Figure 2

The effect of chicken blood on Leishmania development in sand fly midguts: 9 days before infection. P. duboscqi females fed either on chickens or mice and nine days later were infected by 10⁶ promastigotes per ml of bloodmeal. Infection rates and intensities of infection were evaluated microscopically in sand fly midguts on days 2 and 6 PI, and infections were classified into three categories: light (< 100 parasites/gut), moderate (100–1000 parasites/gut), or heavy (> 1000 parasites/gut). Numbers above the bars indicate the number of dissected females.