Figure 10. No effect of maternal chronic hypoxia on the numerical density of SFTP‐B‐positive cells in the alveolar epithelium of the fetal lung.

Micrographs demonstrating no primary antibody‐negative control (Neg 1, A), 1:500 rabbit serum negative control (Neg 2, B), SFTP‐B immunoreactivity (brown intracellular precipitate) in the alveolar epithelium of the fetal lung tissue from normoxic (C) and hypoxic (D) pregnancies. There was no significant effect of maternal chronic hypoxia (black bar, E) on the numerical density of SFTP‐B‐positive cells per mm² of lung tissue in the alveolar epithelium when compared to lung tissue of fetuses from normoxic (white bar, E) pregnancies. Data are expressed as mean ± SD. ^* P < 0.05, P‐value for mean difference between groups. Micrographs at 200× magnification. Scale bar = 50 μm.