RevBio is developing the first bone adhesive to repair bone fractures and stabilize metal implants. Founded by Andrey Marchenko, Brian Hess, George Kay, Grayson Allen, and Jonathan Reese Slotkin in 2014, RevBio is backed by investors that include National Institutes of Health, MassChallenge, Boston Harbor Angels, National Institute on Aging, and Delta Dental of Washington and is headquartered in Lowell.