[Radioautographic study of acid glycoprotein synthesis by tracheal and bronchial glands during ontogeny].

The synthesis of acid glycoproteins in the glands of the respiratory pathway has been studied radioautographically by means of sodium sulfate in the cat ontogenesis. 35S-sulfate incorporation into the fetal gland has been stated to increase by the time of delivery. After birth and in young kittens, 35S-sulfate incorporation into the gland decreases. Acid glycoproteins are intensively synthesized by the tracheal and bronchial gland in young and adult animals. In old animals this process is lowered. The synthesis of acid glycoproteins by the tracheal and bronchial glands in ontogenesis changes both quantitatively and qualitatively.