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(A) 5×105 of ESC1 or ESC2 cells were s.c. injected into nude mice. 3 weeks after cell injection, all mice were sacrificed; tumors were isolated and their weights were compared. (B) Tumors derived from both ESC1 and ESC2 were paraffin embedded. H&E staining was performed on these samples. Representative IHC analyses of p63 (a stemness marker), and CK13 (a differentiation marker) in ESC1 and ESC2 tumors. Scale bar: 50 micrometer.
