There are five types of white blood cells. Neutrophils account for 55-70% of all white blood cells. A neutrophil deficiency is known as neutropenia. Many people use the term neutropenia and leukopenia ...

A person with leukopenia has a low number of white blood cells, or leukocytes, in their blood. A low white blood cell count may make a person more likely to contract an infection. White blood cells ...