It is highly possible but not certain that the embryonic kidney cells came from an electively-aborted foetus. It's worth pointing out, though it won't mollify everyone, that the cell line from that culture is immortal and that the process by which those cells were originally obtained will never have to be repeated. There is no recipe for future abortions. I suppose it's possible to argue, as I will, that, whatever your stance on abortion, the abortion did happen, it didn't happen specifically to get those cells, and that, by using the descendants of those cells to produce a vaccine, at least some good came out of bad. I can respect the unhappiness that many people will feel about this, but the vaccine is now out there and is going to save countless thousands of lives. As I said, good coming out of bad. I can live with myself on that, and it has nothing to do with what I think about abortion in general.