González-Gutiérrez, A., Gaete, J., Esparza, A., Toledo, J., Köhler-Solis, A., Sierralta, J. Visualizing Monocarboxylates and Other Relevant Metabolites in the Ex Vivo Drosophila Larval Brain Using Genetically Encoded Sensors. J. Vis. Exp. (200), e65846, doi:10.3791/65846 (2023).