Ben Carson says it is ‘foolish’ not to use already aborted babies’ tissues in experiments"To not use the tissue that is in a tissue bank, regardless of where it comes from, would be foolish. Why would anybody not do that?"........However, many bioethicists - and the doctrine of the Roman Catholic Church - would disagree that it is morally permissible to participate in any study using cells obtained by elective abortion...even if the aborted remains were supplied by others.
https://www.lifesitenews.com/news/ben-carson-says-it-is-foolish-not-to-use-already-aborted-babies-tissues-in