[Radioimmunoassay of carbonic anhydrase I and II in rats. Application to the central nervous system during ontogeny].

A specific radioimmunoassay method for rat erythrocyte carbonic anhydrases I and II was developed using a double antibody system. Its sensitivity was in the nanogram range for each of the two isozymes. The method has been applied to the assay of cerebral carbonic anhydrase.