“…On the other hand, iPSCs are equivalent to ESCs in multiple aspects, including morphology, growth, gene expression, teratoma formation and contribution to germline chimeras. Lines of iPSCs have been reported for a number of livestock species, including cattle, pig, sheep, horse, goat, dog and some endangered species including drill monkeys, white rhinoceros, orangutan and snow leopard (Baird, Barsby, & Guest, ; Breton et al, ; Chu et al, ; Friedrich Ben‐Nun et al, ; Fujishiro et al, ; Han et al, ; Hildebrandt et al, ; Nagy et al, ; Ramaswamy et al, ; Sartori et al, ). In general, reprogramming factors were delivered into embryonic or foetal fibroblasts by viral vectors, and pluripotency was determined by formation of teratomas.…”