I would bet that just kills all the cells. Actually, I'm still of the opinion that killing the cells containing a target sequence (and thus selecting for pre-ex

I would bet that just kills all the cells. Actually, I'm still of the opinion that killing the cells containing a target sequence (and thus selecting for pre-existing mutants) accounts for a large portion of what has been published regarding this tech. Neither of these papers seem to report on that aspect. Figure S1A of the Cell paper shows cell counts before the HIV sequence was introduced, but they are silent on what happened after. Or did I miss it?