Adaptive substitutions underlying cardiac glycoside insensitivity in insects exhibit epistasis in vivo oleh Andrew M Taverner, Lu Yang, Zachary J Barile, Becky Lin, Julie Peng, Ana P Pinharanda, Arya S Rao, Bartholomew P Roland, Aaron D Talsma, Daniel Wei, Georg Petschenka, Michael J Palladino, Peter Andolfatto