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Enhancers forming close contact with the shared promoter region of FOXE1 and PTCSC2 in a 3C assay. (A) 3C HindIII fragments in 9q22. (B) 3C assay using a constant primer in fragment 6 in KTC-1 cells. (C) 3C assay using a constant primer in fragment 19 in KTC-1 cells. (D) 3C assay using a constant primer in fragment 19 in a fresh unaffected thyroid tissue sample.
