Fig. 2. Time course of G_q translocation from the cell body to the rhabdomere. (A) Retinal cross-sections of dark-raised wild-type flies that were light exposed for 2.5 hours with a light intensity of 50.7x10³ lumens meter^-2 and then incubated in the dark for 20 minutes or 150 minutes. Tissue sections were immunostained with an antibody against G_q. (B) Quantitation of G_q in the rhabdomeres from cross-sections of wild-type flies that were light-exposed for 2.5 hours and then incubated in the dark for 20 minutes, 60 minutes, 150 minutes or 240 minutes. Values are expressed as a percentage of G_q signal in the rhabdomeres of the corresponding dark-raised flies. In the wild type, 89.3±1.76% of G_q is localized to the rhabdomeres within 60 minutes of dark incubation. SEMs are indicated.