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A, Hypersignal in the choroid plexus (3 distinct areas) in the fourth ventricle of gadodiamide + SNx rats, in T1w MRI examinations performed in week 6, and (B) darkest blue areas are referred as choroid plexus (“chp”) of the fourth ventricle (“4 V”) in the Paxinos and Watson atlas, 2007 (Bregma, −11.88 mm). (Reproduced with permission from22.) C, ROI refer to choroid plexus of the fourth ventricle (red, blue, and green), cerebellar parenchyma (pink), and brain stem (yellow).
