. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 4. Schematic presentation of immunohistochemically iden- tified neurons (black circles) in Aplysia abdominal ganglion showing immunoreactivities for histamine (A), serotonin (B). acetylcholine (C), GABA (D), VIP (E), and FMRFamide (F). Each set of four drawings summarizes the observations made of complete series through the gan- glion. The top drawing represents the most dorsal zone, and the bottom drawing the most ventral zone, bn = branchial nerve, gn = genital nerve, Ic = left connective, pn = pericardia! nerve, re
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 4. Schematic presentation of immunohistochemically iden- tified neurons (black circles) in Aplysia abdominal ganglion showing immunoreactivities for histamine (A), serotonin (B). acetylcholine (C), GABA (D), VIP (E), and FMRFamide (F). Each set of four drawings summarizes the observations made of complete series through the gan- glion. The top drawing represents the most dorsal zone, and the bottom drawing the most ventral zone, bn = branchial nerve, gn = genital nerve, Ic = left connective, pn = pericardia! nerve, re = right connective, shn = siphon nerve. (Fig. 4F). R14and R15. nonreactive themselves, received FMRFamide-immunoreactive innervation on their soma (Fig. 5B). In addition, a large number of unidentified neu- rons throughout the ganglion, and a very dense and extensive fiber network in the neuropil, showed FMRFamide-immunoreactivity. SCrVimmunoreactivity was distributed similarly to FMRFamide immunoreactivity. Thus, neurons R2 and L2-L5 were immunopositive, whereas R14 and R15 were nonreactive but received SCPB-immunoreactive inner- vation on their soma. Pedal andplewal ganglia. All antisera stained neurons and a uniformly distributed plexus of nerve fibers and terminals in the neuropil region of both ganglia. A few histamine-, serotonin-, GABA-, and CCA'-immunoreactive neurons were dispersed throughout the neuronal rind of the pedal ganglion. The flcr/y/r/jo/w^-immunoreactive neurons formed clusters on the rostral-medial and caudal-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. W
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