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Pulmonary retention of inhaled monodisperse 5 μm-sized (aerodynamic diameter) gold and polystyrene (PSL) particles. The amount retained is described as a fraction of the initially deposited lung dose. Left: retention-time profile over 24 h, right: retention-time profile over 10 days. Data points: digitized data from six subjects from [26]; solid line: model-based predictions of lung retention.
