Quantity: 50%～70%

LM: 10 to 12 microns in diameter. The core is rod-shaped or divided into 2 to 5 leaves. There are small, uniform lavender granules (azurophilic granules) and pink granules (special granules) in the cytoplasm.

EM: Azure granules: larger, less amount (20%), lysosomes Special particles: small, large amount (80%), secretory particles

Function

Quantity: 0.5%～3%

LM: 10 to 15 microns in diameter. The core is mostly 2 leaves. The cytoplasm is filled with thick, uniform, orange-red eosinophilic granules

EM: Granules (special lysosomes) contain dense crystals

Function

Quantity: 0%～1%

LM: 12 to 15 microns in diameter. The cells were spherical, with S-shaped or irregular nuclei and light-colored nuclei. The cytoplasm contains blue-purple basophilic granules and metachromasia.

EM: The electron density of the membrane particles is high, and some particles have a lamellar structure, containing heparin and histamine, and the cytoplasm contains leukotrienes.

Function

Quantity: 25%～30%

LM: Diameter 6~8 microns/9~12 microns/13~20 microns Small lymphocytes: round nuclei with lateral concavities and dark nuclei. The cytoplasm is sparse and strongly basophilic. The cytoplasm only forms a narrow edge around the nucleus, is stained blue, and contains a small amount of thick azurophilic granules.

EM: The cytoplasm contains abundant ribosomes, a small amount of mitochondria, rough endoplasmic reticulum and membrane particles.

Function

Quantity 3%～8%

LM: 14-20 microns in diameter (the largest white blood cell. The nucleus has various shapes (nuclear oval/kidney-shaped/horseshoe-shaped), the nucleus is lightly stained, the cytoplasm is rich, and it contains small azurophilic granules.

EM: There are wrinkles and villi on the cell surface. The cytoplasm contains many lysosomes and phagosomes

Function