CDH1 and infection: Aminopeptidase N-like genes, E-cadherin (TcCad1) and sodium solute symporter protein (TcSSS) were down-regulated in both host populations at 6 h p. i. Although TcCad1 and TcSSS were found to bind the Cry3Ba more strongly than the Cry3Aa toxin of the beetle-infective B. thuringiensis strain tenebrionis that was used here [42], its down-regulation in our experiment may nevertheless suggest a role in infection with B. thuringiensis tenebrionis.