The blood cells that eat foreign things in your body are called phagocytes.

Here's a breakdown:

* Phagocytes are a type of white blood cell (also known as leukocytes) that engulf and destroy foreign invaders like bacteria, viruses, and cellular debris.

* Macrophages are a specific type of phagocyte that can engulf large particles.

* Neutrophils are another type of phagocyte that are the most abundant white blood cells and are especially important in fighting bacterial infections.

So, the next time you get a cut or are fighting off an illness, remember your phagocytes are hard at work!