AMRP neurons in the buccal ganglion.A1,In situ hybridization of rostral surface. A2, Immunocytochemistry of rostral surface.Inset is same region as arrow from an adult animal showing immunoreactive axons in the CBC.A3, Drawing of the AMRP neurons on the rostral buccal ganglion. B1,In situ hybridization of caudal surface. B2, Immunocytochemistry of caudal surface. Inset is the same region asarrow in an adult animal showing dense innervation of the B1–B2 cluster. B3, Drawing of the AMRP neurons on the caudobuccal ganglion. CBC, Cerebrobuccal connective;N1, nerve 1 (B4); N2, nerve 2 (B5);N3, nerve 3 (B6); SN, salivary nerve (B3); EN, esophageal nerve (B2); RN,radula nerve (B1). Scale bar: A1, 500 μm (same in all panels, including insets).