1. Phagocytes: These are white blood cells that engulf and destroy bacteria. They produce chemicals like reactive oxygen species (ROS) and enzymes (like lysozyme) that break down bacterial cell walls and kill them.
2. Lymphocytes: These are another type of white blood cell that are responsible for the adaptive immune response. They produce antibodies that bind to bacteria and mark them for destruction by phagocytes, and they also release cytokines that activate other immune cells.
While not strictly a structure, neutrophils are a specific type of phagocyte that are particularly important in killing bacteria. They are highly mobile and release neutrophil extracellular traps (NETs) that capture and kill bacteria.
It's important to note that both of these structures work in a coordinated manner as part of the immune system to combat bacterial infections.
