J. Western blotting results of midguts indicate a decrease of LAS in the midguts of aged Drosophila. Loading controls, β-tubulin. K. Quantification of LAS band intensity as seen in experiments (J). Error bars indicate the SD of three independent experiments. L 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. 