Modification of neurosecretory cells in the preoptic nucleus of tench (Tinca tinca) and of various plasm ions following an elevation of water temperature]

Temperature increasing in water is responsible in Tench of on activity decrease in neurosecretory cells of preoptic nucleus, and of an increase in sodium plasmatic concentration. Influence of parameter is discussed.     

Value of silver staining technics for studying translocations involving acrocentric chromosomes

The silver-staining technique was used to study several cases of translocations involving acrocentric chromosomes: robertsonian translocations, balanced reciprocal translocations, non-reciprocal translocation. This technique provides very useful and reliable information about the presence, loss or translocation of active NORs in cases of acrocentric breaks.