hemocytoblast (blood stem cell)

Note: This chart mixes classification by cell differentiation and classification by cell function in an attempt to arrive at the most practical way to divide white blood cells.

Myeloid

Lymphocytes

Natural killer cells

Small lymphocyte

T cell

B Cell

Granulocytes

Basophil

Neutrophil

Eosinophil

Monocyte

Macrophage (in tissue)

Plasma cell (making antibodies)

Mast cells

Note: This chart mixes classification by cell differentiation and classification by cell function in an attempt to arrive at the most practical way to divide white blood cells.

allergy, multicellular parasites

inflammation, allergy

Dendritic cells

memory B cell

Effector

Memory

Helper (CD4+)

Cytotoxic (CD8+)

TH1

TH2

TH17

Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing, angiogenesis, immune tolerance, defense against pathogens, and blood–brain barrier function.

B-cell heavy, anti-bacteria immune response

cellular, antiviral/anti-cancer immune response

recruit neutrophils
fight extracellular bacteria, yeasts
associated with psoriasis