"Bacterial invaders" refers to bacteria that enter and attack the body. It means harmful bacteria that try to invade and cause disease or infection in a living organism. Full definition
The critical immune pathway in question is the NOD2 pathway, which detects and responds to bacterial invaders by releasing inflammatory signals to fight the infection. (sciencedaily.com)
«Disease - causing bacterial invaders aided by failure of immune system switch.» (sciencedaily.com)
It was a fast, accurate way to sense and remove bacterial invaders. (discovermagazine.com)