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Hematoxylin and eosin staining of (A) control rat with no treatment and no SD, (B) 18.6 mg PL liquid Survanta treatment, (C) 0.61 mg PL EEG Survanta, (D) 0.97 mg PL EEG Survanta, (E) 1.73 mg PL EEG Survanta treatment, and (F) 3.46 mg PL EEG Survanta showing no clear signs of neutrophils influx (i.e., inflammation), although liquid Survanta treatment group (B) shows signs of structural alveoli collapse. Color images are available online.
