- Localization of substance P-like, leucine-enkephalin-like, methionine-enkephalin-like, and FMRFamide-like immunoreactivity in the eyestalk of the fiddler crab, Uca pugilator. Fingerman, M., Hanumante, M.M., Kulkarni, G.K., Ikeda, R., Vacca, L.L. Cell Tissue Res. (1985)