The majority of nitrergic and serotonergic neurons are GFP+. ret:GFP is expressed in the majority of nitrergic (A?A?) and serotonergic (B?B?) neurons (white). Insets in (A?,B?) show close-up of the boxed area, GFP, nNOS or 5-HT, and overlay from left to right. Schematic of boxed area of larval schematic (C) indicates the four gut sub-regions analyzed (D). (E) Quantification of GFP and nNOS colocalization in four gut regions as shown in (D). Bar graph shows % GFP+/nNOS+ out of total nNOS+ cells (yellow), and % GFP?/nNOS+ out of total nNOS+ cells (magenta). Error bars show ±standard error of the mean (2 experiments, 23 larvae). (F) Quantification of GFP and 5-HT colocalization in four gut regions shown in D. Bar graph shows % GFP+/5-HT+ out of total 5-HT+ cells (yellow), and % GFP?/5-HT+ out of total 5-HT+ cells (magenta). Using 2-way ANOVA, we did not find significant differences between the cell population of the different gut regions. Error bars show ±standard error of the mean (2 experiments, 22 larvae). (A?A?,B?B?): maximum projections of dissected guts. Scale bar = 100 µm.
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