Bakker, S.C.

alveolar liposomes uptake alveolar macrophages surfactant uorescence macrophage alveolar cells fl uorescence lipid –labeled pg liposomes auto fluorescence concentration cell-associated fl uorescence cell-associated bodipy –labeled signi figure physiol signi ficant difference percentage receptor fluorescence signi ficantly ficant phospholipid composition type ii cells protein –labeled liposomes ϯ sem dppc liposomes receptor density number increase surfactant lipids result cell-associated texas difference 37њ c effect density signi ficant decrease pg ϩ cells study pi liposomes ficantly af finity lipid composition pathway –associated lung cell pg liposomes incubation internalize confocal laser microscopy presence experiment fl uorescent liposomes bodipy fl uorescence surfactant lipid composition identi fied biology vol metabolism bodipy-labeled internalize dppc surfactant protein receptor densities phosphatidylglycerol competition decrease competition experiments charge fisher value subpopulation amount component internalization