> Frankly just getting it to work at all is the real hurdle in this case This being the point. Many diseases have been cured dozens of times over in a tissue

> Frankly just getting it to work at all is the real hurdle in this case This being the point. Many diseases have been cured dozens of times over in a tissue sample in a lab that never make it to actual therapies because the hurdle is elsewhere. The risks with crispr are as stated, especially flooding your entire body with it to target a virus.