Fig. 2.

Box-and-whisker plots showing brain-derived neurotrophic factor (BDNF) and glial-derived neurotrophic factor (GDNF) gene (A) and BDNF protein (B) expression in CB after 7-day hyperoxic exposure. Melting curves show single PCR product in all cases. Percentiles (75th and 25th; IQR) define the upper and lower limits of the box, and the median is represented as the line inside of the box. For gene expression, the box represents the hyperoxic group, whereas the discontinued line represents baseline expression given by normoxic control. G6PDH, glucose 6-phosphate dehydrogenase. *P < 0.05 vs. control group by Mann-Whitney U test (n = 6/group).