Leukopenia

Leukopenia
Other names	leukocytopenia, leucopenia, leucopoenia
3D rendering of various types of white blood cells[1]
Specialty	Infectiology, hematology

Leukopenia (from Greek λευκός (leukos) 'white', and πενία (penia) 'deficiency') is a decrease in the number of leukocytes (WBC). Found in the blood, they are the white blood cells, and are the body's primary defense against an infection. Thus the condition of leukopenia places individuals at increased risk of infection.