The most common type of white blood cell. They help fight infection.
Related definitions
- neutropeniaA low level of neutrophils (type of white blood cell) which makes it harder for your body to fight infections.
- granulocyte-colony stimulating factorA naturally occurring and man-made growth factor which stimulates bone marrow stem cells to produce more white cells, particularly neutrophils.
- granulocyteA type of white blood cell that help protect the body from infection by finding and destroying germs. They include cells like neutrophils, eosinophils, and basophils. Neutrophils are the most common type.









