RASSF9 and infection: Although overexpression of RASSFF9 by adenoviral transduction in RASSF9−/− keratinocytes efficiently rescued filaggrin expression at low multiplicity of infection (MOI = 5), increasing dosages of RASSF9 beyond 5 MOIs were not able to further enhance the filaggrin expression in RASSF9−/− keratinocytes (Figure S12A).