What animal cell helps fight infection?

White blood cells, or leukocytes, play a crucial role in fighting infection in the body. They are part of the immune system and can be classified into various types, such as lymphocytes, neutrophils, and monocytes, each with specific functions in identifying and eliminating pathogens. By recognizing and responding to foreign invaders like bacteria and viruses, white blood cells help protect the body from illness and disease.