Neutrophil, a class of leukocytes, eats and kills bacteria invading the body (Phagocytosis activity).
They are significantly reduced in number by a certain disease; side effects of cancer therapy; or other reasons, resulting in a condition that a patient could be vulnerable for infection.
Filgrastim accelerates increase in the number of neutrophils. Administration of Filgrastim to patients with neutropenia will kill bacterias and reduce risks of infections.