Figure 4.

Regulation of attacin, defensin, and diptericin expression in fat body during the course of parasite establishment and the immunocompetence of parasite-infected and infection-cured flies. (A) Northern analysis showing gene expression in fat body 3 and 6 days after a parasite infected bloodmeal (lanes 1 and 2, respectively) and after 10 days, when flies were scored as infected (+) or parasite infection cured (−) (lanes 3 and 4, respectively). (B) Gene expression in fat body from flies with (lane 1) and without (lane 3) gut parasite infections 20 days after receiving the infectious bloodmeal and their immunocompetence after challenge (lanes 2 and 4, respectively). +, parasite infected; −, parasite cured; N, naive; I, immune stimulated.