"Interestingly enough, axillary buds on Itohs can be used to propagate them through micropropagation. Bob Johnson has said that when he was working at Caprice Nursery they would see rooting from stems and resulting growth from these buds when they cut the stems up and wrapped them in damp paper towel or newspaper."
That's very interesting, Nick. I do get growth from these buds on Itohs now that I'm growing in zone 8a but might have to experiment with a few next year.