BRAINCAKELymphocytes and Phagocytes
There are two types of white blood cell, phagocytes and lymphocytes.
Lymphocytes
Lymphocytes are white blood cells involved in the specific immune response. The specific immune response is less rapid but longer lasting and target particular pathogens.
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Key terms in this lesson
- pathogen
- A microorganism, such as a virus, bacterium, fungus or protoctist, that causes disease.
- antigen
- A protein or glycoprotein, usually on a cell surface, that is recognised as foreign by the immune system and triggers an immune response.
- antibody
- A Y-shaped protein, made of four polypeptide chains with variable regions complementary to a specific antigen, produced by B plasma cells.
More in Cell Recognition and the Immune System
- The Immune System
- Defence Mechanisms
- Recognising Self and Non-Self Cells
- Phagocytosis
- Antigens
- Lymphocytes
- Cell-Mediated Immunity
- Cytotoxic T-cells
All 30 lessons in Cell Recognition and the Immune System · All AQA AS-level Biology topics