Fig. 1From: Therapeutic effect of subcutaneous injection of low dose recombinant human granulocyte-macrophage colony-stimulating factor on pulmonary alveolar proteinosisElectron microscopic appearance of patient’s lavage fluid. Transmission electron microscopy (TEM) showing oval granules with bright and dark interlaced threadlike or fingerprint-like stripes. × 20,000 timesBack to article page