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(A)Typical histograms of micro-CT in normal, (B) Radiation-induced mice lung injury at 1 day (X1), and (C) Radiation-induced mice lung injury at 4 days, after x-ray exposure (X4). Areas of high density (between −200 to −500 HU) in three-dimensional Micro-CT slices are shown in green, and areas of low density (below −500 HU) are shown in blue.
