Sertoli Cell-Only SyndromeSertoli CellsTestisSpermatogenesisSyndromeSertoli Cell TumorPubertySeminiferous TubulesSexual MaturationSeminiferous EpitheliumBlood-Testis BarrierDown SyndromeMetabolic Syndrome XFollicle Stimulating HormoneSpermatidsLeydig CellsSpermatogoniaSpermatocytesTestosteroneCells, CulturedPuberty, DelayedNephrotic SyndromeSpermatozoaReceptors, FSHSjogren's SyndromeTurner SyndromePuberty, PrecociousAndrogen-Binding ProteinInhibinsCell DifferentiationTesticular HormonesRNA, MessengerImmunohistochemistryTesticular DiseasesOrgan SizeGerm Cells