Figure 4From: Hemoglobin induces inflammation after preterm intraventricular hemorrhage by methemoglobin formation TNFα protein in periventricular brain tissue. Determination of TNFα protein concentration in periventricular brain tissue of preterm rabbit pups with IVH (dark shaded bars; n = 6 at 24 hours and n = 6 at 72 hours) and in control pups (white bars; n = 6 at 24 hours and n = 6 at 72 hours), using ELISA, as described in the Methods section. Results are presented as box plots displaying medians and 25th and 75th percentiles. The difference between IVH versus control at 72 hours was analyzed using the Mann–Whitney U test. * P <0.05. IVH, intraventricular hemorrhage.Back to article page