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Representative microscopic photographs of ZEB1 (a-f) and RUNX1 (g-h) expression in various RCT. (a-f) Absence of ZEB1 on tumor cells, but positive nuclear staining on tumor blood vessels in ccRCC, pRCC type I, pRCC type II, MLCRN-LMP and chRCC, (f) in contrast to strong diffuse nuclear expression of ZEB1 on tumor cells in RO; (g-h) Strong and diffuse nuclear RUNX1 expression on tumor cells immunopositivity in ccRCC and MLCRN-LMP, respectively. Original magnification, × 200
