Figure 1. Photomicrograph of the lung. A – A massive intra-alveolar hemorrhage (asterisk) (H&E, 40X); B – Desquamation of bronchiolar epithelium (arrowhead) and necroinflammatory slough in the lumen (H&E, 100X) (asterisk); C – Presence of hyaline membrane (H&E, 400X) (arrows); D – The sloughing off of the bronchial epithelium (H&E, 100X).