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Cell phenotype and tumor formation in nude mice. Parental (RWPE1/PWR1E) and cadmium-exposed (Cd-RWPE1/Cd-PWR1E) cells under the reflected light microscope (A). Sketch showing injection scheme (B). Tumor formation by Cd-RWPE1 cells (C-D). Batch matched parental RWPE1 cells did not result in any tumors (D). Tumor volume over the course of experiment (D). There were four replicates for each cell line. Error bars ±SE.
