“…Collagen fibrils (f) lie between the seminiferous epithelial and inner myoid cell basal laminae. Scale bar ϭ 5 m. Saxena et al, 1989;Kaido et al, 1992), experimental allergic orchitis (Doncel et al, 1989), and vitamin deficiencies (Ismail and Morales, 1992) can produce degeneration of the testis in the rat. At least some of these, including doxorubicin treatment (Fuse et al, 1992) and experimental allergic orchitis (Doncel et al, 1989), produce changes in the boundary zone.…”