['Desensitization of FSH response by down-regulation of FSHR transcription is critical for FSH action.', 'Chromatin modifier MTA2 participates in the down-regulation of FSHR transcription.'] Is sertoli cell-specific expression of metastasis-associated protein 2 ( MTA2 ) required for transcriptional regulation of the follicle-stimulating hormone receptor ( FSHR ) gene during spermatogenesis?