Abstract Surfactant protein-D (SP-D) participates in the innate response to inhaled microorganisms and organic antigens. and contributes to immune and inflammatory regulation within the lung. SP-D is synthesized and secreted by alveolar and bronchiolar epithelial cells. but is also expressed by epithelial cells lining various exocrine ducts and the mucosa of the gastrointestinal and g... https://halohealthcarers.shop/product-category/shower-benches-bathroom/