Summary
Evidence of dopamine cells in the brain and the suboesophageal ganglion of the silkworm Bombyx mori was obtained immunohistologically in larvae and pupae. From six to eight and eight (two symmetrical groups of four) immunoreactive cells are present respectively in median and lateral protocerebral areas of the brain. In the suboesophageal ganglion, two cell clusters with dopamine immunoreactivity were observed. There was no clear difference in the nature of the immunohistochemical reaction and the number of cells between diapause- and non-diapause-egg producers, in both brains and suboesophageal ganglia. By examination of adjacent sections, it was possible to show that dopamine-immunoreactive cells in larval suboesophageal ganglia also contain an α endorphin-like substance.
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Takeda, S., Vieillemaringe, J., Geffard, M. et al. Immunohistological evidence of dopamine cells in the cephalic nervous system of the silkworm Bombyx mori. Coexistence of dopamine and α endorphin-like substance in neurosecretory cells of the suboesophageal ganglion. Cell Tissue Res. 243, 125–128 (1986). https://doi.org/10.1007/BF00221860
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DOI: https://doi.org/10.1007/BF00221860