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A–C, Immnostaining for FLT1 in low (A), intermediate (B) and high (C) grades of tumors. D–F, Immnostaining for HES1 in low (D), intermediate (E) and high (F) grade tumors. G–I, Immnostaining for NR4A2 in low (G), intermediate (H) and high (I) grade tumors.
