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Gel zymography of right hemisphere homogenates at postnatal day 0, 4, 7, 14, and 21. Top photographs show representative zymogram gels (A, B). Bar graphs show quantified densitometry data. MMP-2 activity was increased in hypoxic animals compared to control animals at day 0 (C). MMP-9 activity was also increased in hypoxic animals at day 0 and 4 (D). No significant differences in MMP-2, MMP-9 activities were detected at other time points. *p < 0.05, N = 6 per group.
