Complex sentence: In this way, STING protects host from Listeria monocytogenes infection by regulating monocyte migration and the activation of STING is likely to be mediated by cyclic-di-AMP secreted by intracellular bacteria.
Split into simpler sentences: In this way, STING protects host from Listeria monocytogenes infection by regulating monocyte migration. The activation of STING is likely to be mediated by cyclic-di-AMP secreted by intracellular bacteria.