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Immunohistochemical staining of DDX4, SOX9, and WT1 in the seminiferous tubules of adult goat testes. (a) The negative control section used non-immune rabbit serum. (b) DDX4 localized in germ cells. (c) SOX9 and (d) WT1 localized in Sertoli cells. Scale bars = 25 μm. SOX9: SRY-related high mobility group-box gene 9; WT1: Wilms tumor protein 1; DDX4: DEAD-box polypeptide-4.
