MADISON, Wis. (AP) — University of Wisconsin-Madison researchers oppose a bill that would ban the use of aborted fetal tissue in Wisconsin. Federal law already bans the sale of fetal tissue, but donation is allowed. The bill scheduled for an Assembly committee hearing Tuesday would ban the use of aborted fetal tissue in experiments. The lead sponsor, Republican Rep. Andre Jacque, says he’s changed the proposal from an earlier version which also banned research using cells derived from fetal tissue.