Accounts for 50%-70% of the total number of white blood cells, the largest number, and survives in tissues for 2-3 days

Nucleus lobed or curved rod-shaped Leaves are divided into 2-5. The more leaves, the sign of aging.

Left-shifted nucleus (more than 2 lobes) Nucleus shifted to the right (more than 5 leaves)

Special granules: lysozyme, phagocytosin (defensin, bactericidal effect)

Deformation movement, chemotaxis Phagocytosis function, swallowing bacteria and foreign bodies (an increase in its ratio indicates bacterial infection, or pus)

Eight-shaped leaves, 2-3 leaves, belonging to lysosomes

Contains histamine enzyme (breaks down histamine) Arylsulfatase (breaks down leukotrienes) and four cations (cations, which kill parasites)

Allergic diseases and parasites Survive 8-12 days

Minimum quantity, 0-1.0%, irregular shape Blue-purple basophilic granules in the cytoplasm cover the nuclear surface and are metachromatic. Granules contain heparin, histamine, eotaxin intracytoplasmic leukotrienes

Derived from bone marrow hematopoietic progenitor cells

Survive 10-15 days

3.0-8.0%, the largest white blood cell Irregular, loose chromatin

Cytoplasm is weakly basophilic, gray-blue The nucleus is kidney-shaped or horseshoe-shaped

Weak ability to phagocytosis

25%-30%

The smallest size, round nuclei, deep staining, and very little cytoplasm

Category 1

Category 2