Table 1. 5-HTR MiMIC T2A-GAL4 transgenic lines used and the number of cells in each cluster that express each receptor.

With the exception of 5-HT7, our investigation relies solely on MiMIC T2A-GAL4 protein-trap transgenics (PT). In all cases, the number of cells in each cluster that express each receptor are represented as mean ± s.e.m. (n  =  number of brains). Note that the total number of LNs that express a given 5-HTR line is the total of the GABA, cholinergic (ChAT), and glutamatergic (Glut) LN columns, since peptidergic LNs are also GABAergic. “PT” and “GT” describe which lines are protein-traps and which are gene-trap, respectively. “N/Ap” denotes 5-HTR expressing neuron classes that did not co-label for that given transmitter, or expressed by that neuronal class. Dashes (“—”) denote lines that were not tested for colabeling.