[nopassrecover]

Presumably that risk could be mitigated with improved processes (vacuum room?). If I read correctly, this was extreme application of an existing technique (chemotherapy).

Admittedly this is pretty intense, but so are treatments for cancer. Let's hope this leads to improved and safer treatments in the future.

[rms]

It's a bone marrow transplant. The process is rather well established. http://en.wikipedia.org/wiki/Hematopoietic_stem_cell_transpl...