Scanning cytophotometry : A method for studying the amount of neurosecretory material in the preoptic nucleus of the trout (Salmo gairdneri) M. TERLOU, J. P. DE JONG and P. G. W. J. VAN OORDTAnn. Biol. anim. Bioch. Biophys., 18 4 (1978) 851-856DOI: https://doi.org/10.1051/rnd:19780515