I’ve heard of therapies where somehow genes are manipulated by one method or another so that faulty genes are repaired and the patient is cured.
How does this work? After all, you can’t manipulate all the cells in the body or even in one organ, so you can only do some limited set. Then you have to hope that somehow the treated cells replace the untreated ones, but it seems to me it could just as easily go the other way.
Can anyone explain how this is supposed to work?