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Absence of macrophage accumulation in the twi/CNP-EGFP graft. CD45 immunolabeling (red) of the dorsal column of thoracolumbar spinal cord in 45-day-old moribund twi mice (A), 60-day-old wild-type mice (B), and 4-month-old untransplanted shi mice (C). Microglia in the engrafted dorsal column of shi mice were sporadically further activated; however, there was no macrophage accumulation (D). (Scale bar: 100 μm.)
