Fig. 1From: SAM protects against alveolar septal cell apoptosis in autoimmune emphysema ratsa Lung tissue histology in a normal control rat (HE, original magnification × 400). b Lung tissue histology in a rat with emphysema (HE, original magnification × 400). c Lung tissue histology in a rat treated with SAM (HE, original magnification × 400)Back to article page