F. Quantification of excretion numbers of Drosophila carrying esgts-GAL4-driven UAS-lacZ (control), Las RNAi, or Las RNAi with ALA administration. Excretions are quantified in 30 fields for each group of 12 Drosophila. Tests were repeated as three independent experiments. Data information: The statistical tests used in other panels were student's t-tests. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001, and non-significant (NS) represents p > 0.05. 