Physiology General d3f1c601 Pulmonary surfactant A Pulmonary surfactant B In Hyaline membrane disease deficiency occurs C Theraputic application seen D All High-Yield Explanation A i.e. Secreted from 26th week of gestation; B i.e. In hyaline membrane disease deficiency of surfacetant is seen C i.e. Theraputic application is seen