https://apnews.com/86b58da26af74dc6d52d92dbdf87cac5 > WASHINGTON (AP) — U.S. regulators are moving ahead with a crackdown on scores of antibody tests for the coronavirus that have not yet been shown to work. > The Food and Drug Administration on Thursday published a list of more than two dozen test makers that have failed to file applications to remain on the market or already pulled their products.