RBFOX3 and ischemia: Ten days post-ischemia in the contralateral hemisphere to the lesion, it can be seen unchanged cortical layers in their immunoreactivity, when they are compared with control (Fig. 2 At 20 days post-ischemia, the finding is indistinguishable from those found in the specimens at 10 days, which consist in an immunoreactivity to NeuN similar to controls; different from that observed in samples at 24 and 96 h.