Fig. 8. Cells expressing Dh also express the leucokinin receptor. Larval brain, double stained for LKR, the Drosophila leucokinin receptor (Radford et al., 2002) and DromeDH₄₄. (a) Immunostaining for LKR (green), showing widespread expression; (b) immunostaining for DromeDH₄₄ (red), showing expression in cell triplets, as in Fig. 7 (not all visible in this plane of focus), and in their axons in the retrocerebral complex of the corpus cardiacum (CC); (c) merged image showing colocalisation.