Fig. 2From: Whole lung lavage decreases physiological dead space in patients with pulmonary alveolar proteinosis: two case reports The collected fluid with visible turbidity. The first (left) and the last (right) saline samples collected are presented for Case 1 (Trial 1). Saline samples collected at earlier time points were whitish because of the presence of surfactant; subsequent samples were progressively clearerBack to article page