Figure 1From: Possible role of the α7 nicotinic receptors in mediating nicotine’s effect on developing lung – implications in unexplained human perinatal death Histological section of lung parenchima showing the radial alveolar count (RAC) method. SIDS case, 1 month-old (RAC: 2.5; normal mean value for age: 5.5 ± 1.4). Hematoxylin-eosin stain; magnification: 10×.Back to article page