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This paper says there are 200:

(well, it says "more than 200" as of 2010, but that's unlikely to mean "north of a million" today)

I can not believe it is that high? Really?

I understand that the ice crystals created in current processes basically further destroy the tissue so that rranimation is likely impossible.

It is. Here[1] is one source.

Oh, embryos. That is a little different.

Can you provide a source for this claim?