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Figure 4: Distribution of nestin immunoreactivity in the renal interstitium from controls (Ctrl) or from animals sacrificed at increasing time intervals (hours or days) after reperfusion. Each column corresponds to the mean number of nestin immunoreactive fusiform cells ( ± S D ) after examination of cortex and outer medulla (OSOM, ISOM) for each experimental group ( 𝑛 = 4 ) ( 𝑃 < . 0 1 versus control).