It's my own estimation based on the evidence I've seen. There's plenty of detail when you look at neural tissue using a microscope: http://www.alcor.org/Library/html/braincryopreservation1.htm...

That is not peer-reviewed research, and therefore I treat it about as seriously as I treat any other comment on the internet: at best incompetent, at worst maliciously deceiving. Considering its published by a company that makes money from freezing people...probably the latter.

By all means, please, show us peer reviewed sources that contradict it.