White blood cells circulate in the blood and lymphatic ... such as a virus or a splinter in the finger, it launches an attack to destroy the pathogens. People are born with some types of immunity ...

In response, a white blood cell arrives at the scene. This cell encircles the pathogen with its membrane, forming a tight, constricting ring. With remarkable force, the white blood cell yanks the ...

White blood cells are part of the immune system and are responsible for attacking invading pathogens. When you have a low ...

New research shows how a specially trained population of immune cells keeps the peace by preventing other immune cells from attacking their own. The study provides a better understanding of immune ...

The immune system defends humans from pathogens. Physical and chemical barriers prevent infection. White blood cells attack pathogens. Immunisations usually involve injecting inactive pathogens.

The immune system responds to an infection by producing antibodies that recognize and bind to the cell surface of the pathogen, thus marking it as an intruder and triggering an immune response.