D. Relative mRNA fold changes of endocytosis-related and autophagy-related genes with sorted esg-GFP+ cells of 40-day Drosophila treated without ALA administration and 40-day Drosophila treated with 0.5 mM ALA administration. Error bars indicate the SD of three independent experiments. Data information: Error bars represent SDs. Student's t-tests, *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001, and non-significant (NS) represents p > 0.05. 