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Box plot of mean ASL perfusion levels (Pwhole) according to histologic type. Boxes depict interquartile ranges, bounded inferiorly by the first quartile and superiorly by the third quartile. Horizontal lines within boxes represent the median. Smallest and largest nonoutlier values are marked with horizontal ticks, which are connected to boxes with a vertical line. ccRCC = clear cell RCC, chrRCC = chromophobe RCC, pRCC = papillary RCC, uRCC = unclassified RCC.
