[Ultrastructure of the larval pancreas of an anuran amphibian, Alytes obstetricans L, in organ culture].

Different techniques have been used to realise organ culture of larval pancreas of Alytes obstetricans Laur. Some methods allow to get satisfaction results. The general aspect of the explant is described, as also the ultrastructure of the different parts of the pancreas. The results allow to consider the experimental study of the in vitro metamorphosis under the influence of thyroxine.