Figure 3
From: Spatial and temporal expression of surfactant proteins in hyperoxia-induced neonatal rat lung injury
mRNA expression of surfactant protein A, determined with in situ hybridization on formaldehyde fixed paraffin sections of rat lungs during normal postnatal development at birth (A), day 3 (C), day 6 (E) day 10 (G) and 6 months (B) and after exposure to hyperoxia on day 3 (D), 6 (F) and 10 (H) at a 200-fold magnification. a = alveolus, ad = alveolar duct, br = bronchus, bv = blood vessel, s = saccule, tb = terminal bronchus.