Summary
Efferent fibers to the compound eye of the horseshoe crab, Limulus polyphemus, not only innervate the various pigment cells, but also invade the eccentric cell dendrite and the retinula cells. This finding provides a structural basis for the coupling of circadian rhythm between the efferents and the receptor cells.
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This short communication is Publication No. 1130 of the Oregon Regional Primate Research Center. The research was supported by Grants RR-00163 and EY-00392 from the National Institutes of Health
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Fahrenbach, W.H. The morphology of the horseshoe crab (Limulus polyphemus) visual system. Cell Tissue Res. 216, 655–659 (1981). https://doi.org/10.1007/BF00238660
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DOI: https://doi.org/10.1007/BF00238660