The total length of tubules in normal and atrophic testes.
D001284:Atrophy; D006801:Humans; D007713:Klinefelter Syndrome / Q000473:pathology; D008297:Male; D013733:Testicular Diseases / Q000473:pathology*; D013737:Testis / Q000033:anatomy & histology* / Q000473:pathology