Leukocytes: Diverse Types, Mobility, and Key Immune Functions

Major Leukocyte Types

• Neutrophils: First responders; phagocytosis, NETosis.
• Lymphocytes: B cells (antibodies), T cells (cell-mediated), NK cells (innate cytotoxicity).
• Monocytes/Macrophages: Phagocytosis, antigen presentation, tissue repair.
• Eosinophils: Anti-parasitic, allergic inflammation.
• Basophils: Histamine release, allergic responses.

Shared Attributes

• High Motility: Chemotaxis, transendothelial migration.
• Phagocytosis: Neutrophils, monocytes, macrophages.
• Immune Surveillance: Continuous patrolling for pathogens/abnormal cells.
• Cytokine/Chemokine Production: Orchestrate inflammation and resolution.
• Tissue Repair: Growth factor release (TGF-β, VEGF, PDGF).

This cellular diversity enables tailored responses to virtually any threat.