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Expression patterns of PPARg shows in the testis. (a) In the testis, PPARγ protein is detected at high expression in Sertoli cells and weak expression in spermatocytes. The names of cells expressing PPARγ are underlined. (b) PPARγ forms obligate heterodimers with RXRγ for regulation of lipid metabolic target genes, providing energy for spermatogenesis. PPARγ: peroxisome proliferator-activated receptor gamma; RXRγ: retinoid X receptor gamma.
