Figure 1From: Elevated platelet-derived growth factor-BB concentrations in premature neonates who develop chronic lung diseaseTracheal aspirate concentrations of PDGF-BB normalized to secretory component (sc) in mechanically ventilated infants with RDS during the first 14 days of life. Concentrations of PDGF-BB increased significantly during the course of RDS. Data represent mean ± SEM. Numbers in parenthesis are the number of TA samples assayed per time period. *p < 0.05 (ANOVA repeat measures).Back to article page