[Effect of hydrocortisone on fusion of the palatine process cultured in presence of an excess of vitamin A].

Rat palatal processes have been explanted after 15 days 18 hours of gestation and cultivated in homologous pairs, side by side during 24 hours. Most of them have been treated in vitro by hydrocortisone and vitamin A in excess. In all cases, palatal processes fuse. Thus, the phenomenon does not seem disturbed by this glycocorticoid.