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Histological appearance of grafted testicular tissue. (a) Iberian lynx, 28 weeks after grafting; (b) germ cells labelled by protein gene product (PGP) 9.5 immunostaining in Iberian lynx testis graft, 66 weeks after transplantation; (c) Cuvier’s gazelle testis graft after 58 weeks; and (d) Mohor gazelle testis graft 28 weeks after grafting. Arrows indicate spermatogonia; arrowheads indicate round spermatids; asterisks indicate Leydig cells. Scale bars = 100 μm.
