A person has leukopenia if they have a reduced number of total white blood cells in their blood. According to the Leukemia & Lymphoma Society, a healthy white blood cell count is 5,000–10,000 white ...

An absolute neutrophil count (ANC) is a laboratory test that measures the amount of a specific white blood cell—called a neutrophil—in a sample of blood. In a healthy adult, 2,500 to 7,000 is ...

Stem cells are precursors of a variety of different cells: They can turn into anything from blood to bone to muscle. Human blood stem cells, known as hematopoietic stem cells, are the forerunners of ...

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 ...