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Porphyrin chemical structure and schedule of the brain radioprotection study. A, chemical structure of MnTnBuOE-2-PyP5+. B, all groups began saline or MnTnBuOE-2-PyP5+ dosing one week before and for two months after sham or RT (8 Gy). After three months post-RT, all groups were subjected to imaging, neurocognitive testing, or MnTnBuOE-2-PyP5+ tissue analysis.
