ClostraBio, a Chicago startup creating a drug that aims to prevent allergic reactions to food, has raised a $3.5 million seed round. Born out of the University of Chicago, ClostraBio is creating some of the first drugs to prevent and treat food allergies. The startup's goal is to make drugs that boost the body's natural intestinal barrier, stopping the reaction before it starts. It's initially working to solve peanut and milk allergies. Investors in the round include Morningstar founder Joe...