Acetylcholine

Kerkut, G.A., Lambert, J.D.C., Gayton, R.J., Loker, J.E., & Walker, R.J. (1975). Mapping of Nerve Cells in the Suboesophageal Ganglia of Helix aspersa. Comparative Biochemistry and Physiology, 50A, 1-25.

Hatakeyama, D. & Ito, E. (2000). Distribution and Developmental Changes in GABA-Like
Immunoreactive Neurons in the Central Nervous System of Pond Snail, Lymnaea stagnalis. Journal of Comparative Neurology, 418, 310-322.

Dopamine

Kerkut, G.A., Lambert, J.D.C., Gayton, R.J., Loker, J.E., & Walker, R.J. (1975). Mapping of Nerve Cells in the Suboesophageal Ganglia of Helix aspersa. Comparative Biochemistry and Physiology, 50A, 1-25.

Serotonin

Baker, M.W. & Croll, R.P. (1996). Modulation of In Vivo Neuronal Sprouting by Serotonin in the Adult CNS of the Snail. Cellular and Molecular Neurobiology, 16, 5, 561-576.

Balaban, P.M., Vehovszky, A., Maximova, O.A., & Zakharov, I.S. (1987). Effect Of                5, 7-Dihydroxytryptamine on the Food-Aversive Conditioning in the Snail Helix lucorum L.  Brain Research, 404, 201-210.

Bernocchi, G., Vignola, C., Scherini, E., Necchi, D., & Pisu, M.B. (1998). Bioactive Peptides and Serotonin Immumocytochemistry in the Cerebral Ganglia of Hibernating Helix aspersa. The Journal of Experimental Zoology, 280, 354-367.

Hatakeyama, D. & Ito, E. ( 1999). Three-Dimensional Reconstruction and Mapping of Serotonin-Like Immunoreactive Neurons in the Central Nervous System of the Pond Snail, Lymnaea stagnalis, with the Confocal Laser Scanning Microscope. Bioimages, 7, 1-12.

Kerkut, G.A., Lambert, J.D.C., Gayton, R.J., Loker, J.E., & Walker, R.J. (1975). Mapping of Nerve Cells in the Suboesophageal Ganglia of Helix aspersa. Comparative Biochemistry and Physiology, 50A, 1-25.
 

Peptides

Bernocchi, G., Vignola, C., Scherini, E., Necchi, D., & Pisu, M.B. (1998). Bioactive Peptides and Serotonin Immumocytochemistry in the Cerebral Ganglia of Hibernating Helix aspersa. The Journal of Experimental Zoology, 280, 354-367.

Leung, P.S., Shaw, C., Johnston, C.F., & Irvine, G.B. (1994). Immunocytochemical Distribution of Neuropeptide F (NPF) in the Gastropod Mollusc, Helix aspersa, and in Several Other Invertebrates. Cell & Tissue Research, 275, 383-393.

MacDonald, M., Lutz, E.M., Lesser, W., Cottrell, G.A., & Sommerville, J. (1994). Expression of mRma Encoding Fmrfamide-Related Peptides (Farps) in the Nervous System of Helix aspersa. Molecular and Cellular Neurosciences, 5, 23-34.