Which cell type is the most abundant white blood cell?

Which cell type is the most abundant white blood cell?

• A. Neutrophil
• B. Eosinophil
• C. Basophil
• D. Lymphocyte

Answer: (A)

Neutrophils are the most abundant white blood cells in circulating blood. They are the frontline defenders, quickly arriving at sites of infection and using phagocytosis to ingest and destroy bacteria. In a healthy adult, they make up roughly half to two-thirds of all circulating leukocytes, far outnumbering the other white blood cell types. Eosinophils and basophils are relatively rare, each present only as a small fraction, while lymphocytes are plentiful but typically represent a smaller proportion than neutrophils in normal blood. That combination makes neutrophils the clear most abundant white blood cell.

Neutrophils are the most abundant white blood cells in circulating blood. They are the frontline defenders, quickly arriving at sites of infection and using phagocytosis to ingest and destroy bacteria. In a healthy adult, they make up roughly half to two-thirds of all circulating leukocytes, far outnumbering the other white blood cell types. Eosinophils and basophils are relatively rare, each present only as a small fraction, while lymphocytes are plentiful but typically represent a smaller proportion than neutrophils in normal blood. That combination makes neutrophils the clear most abundant white blood cell.