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pH dependency of quantification of the β-galactosidase activity of whole larval lysates expressing E. coli and Drosophila genes encoding β-galactosidase driven under the control of the ubiquitous actin5C-Gal4. Assays were performed at 25°C in Fe/NaP buffer (pH 7.0 and pH 6.0). Error bars indicate s. e. m. **: p < 0.01 (Games–Howell test followed by one way ANOVA).
