Absorption of Sr 90 SO 4 from the Lung. ∗

Abstract

Summary

The role of the lung in affecting the translocation of inhaled Sr⁹⁰SO₄ was evaluated by exposing a dog to a Sr⁹⁰SO₄ aerosol through a tracheal fistula. About one-half of the Sr-Y⁹⁰ deposited was rapidly translocated to the bone, and only 2% was retained in the lung one week after exposure. Fifteen per cent was cleared via the trachea, probably by the ciliary processes.