Fig. 4.

Interactions between AKH- and insulin-producing cells in the larva. Schematic representation of the relations between insulin-producing cells (IPC), AKH-producing cells in corpora cardiaca (CC) and DLP neurons that produce corazonin. These three cell types may interact in the CC and the AKH-mediated regulation of IPCs is likely to occur here. IPCs and DLPs may also interact in the pars intercerebralis and tritocerebrum. All three cell types are likely to release their peptide hormones into the aorta via the CC part of the ring gland. Note that the AKH cells have neurite-like extensions along the aorta that are not shown here, and that for simplicity the full number of AKH cells and IPCs are not drawn. This figure is slightly altered from [105]