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Fig. 7. A model of convergent neuropeptide DH31 (CLR) and
DH44 (CRF-R) signaling pathways. DH31-R (red) and DH44-R (blue)
signaling pathways are co-expressed by principal cells of the tubule (top),
and onto CRZ-containing neurons of the CNS (bottom). Both pathways elicit cAMP
increases; the DH31-R1 utilizes a RCP accessory protein. We show
DH31 and DH44 neurons as distinct cell populations in
this model (see Fig. S2 in supplementary material), but these may be partially
overlapping. M. tubule, Malphigian tubule.