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Photomicrographs illustrate examples of ULM with MED12 (MED12-ULM), HMGA2 (HMGA2-ULM) and FH (FH-ULM) mutation/alteration. Tumor sections were examined by histology (H/E) and immunohistochemistry for FH, HMGA2 and MED12 (amplification ×20).
