Immune System Cell Types and Functions - Visual Guide #2172881 (License: Personal Use)

This hierarchical diagram maps key immune cell types and their functional relationships: white blood cells branch into lymphocytes (B and T cells) and phagocytes; B cells differentiate into plasma cells that produce antibodies, while T cells include helper, suppressor, and cytotoxic subtypes. Memory cells provide long-term immunity by retaining antigen recognition and enabling rapid response upon re-exposure. Phagocytes act as first responders, engulfing and digesting pathogens through phagocytosis.

Used in immunology education, medical training, or health科普 articles to explain adaptive and innate immunity; matches user intent for understanding how the immune system identifies, remembers, and eliminates threats.