“…Cells in the NLT -pI exhibited a high level of immunocytochemical staining to 27 -S-methylglucagon in dark-adapted fish and negligible staining in light-adapted ones (Terlou, Gielen, and Notenboom 1985). Cells in the NLT -pI exhibited a high level of immunocytochemical staining to 27 -S-methylglucagon in dark-adapted fish and negligible staining in light-adapted ones (Terlou, Gielen, and Notenboom 1985).…”