Fig. 1. Rac1 effector loop mutants fail to disrupt the sessile hemocyte population. (A-F) GFP expression in sessile hemocytes of control larvae and larvae expressing various alleles of Rac1 (A) He-Gal4 (B) UAS-Rac1; He-Gal4 (C) UAS-Rac1^F37A; He-Gal4 (D) UAS-Rac1^Y40C; He-Gal4 (E) UAS-Rac1^F37A; UAS-Rac1^Y40C; He-Gal4 (F) UAS-Rac1^N17/He-Gal4. (G) Hemocyte counts after overexpression of various Rac1 alleles. He-Gal4 was crossed with the different Rac1 alleles. Hemocytes were counted from at least 15 individual larvae. ^*, significant difference (Student's t-test, P<0.01) compared with the parental UAS and He-Gal4 strains.