Still, the less damage we do in preserving someone, the more likely they might someday be revived. Research is thus VERY important. At the same time, there are less than 1000 committed cryonicists in the entire world, and most of them are normal people making a living at tasks that don't involve lots of cryobiology. I have no magic access to that, and therefore cannot report it. He is working officially on kidneys, but is actually a cryonicist himself.
Research goes on constantly on the problem of repairing damaged brains and nerve tissue.
This has been making slow progress. It's also quite fundamental, in the sense that many people end up with brains damaged first not by freezing but by the loss of blood flow etc which attends their deanimation. Actually doing repair has turned out much harder, though. Again, we want our memories preserved through our suspension. To find out if this happens or not we must first understand formation and preservation of memory in our brain.