Medicine & USMLE

B Lymphocytes Overview

  1. Innate Immunity
  2. Adaptive Immunity
  3. Macrophages
  4. Neutrophils
  5. Dendritic Cells
  6. Mast Cells
  7. Eosinophils
  8. Basophils
  9. Natural Killer Cells
  10. Antigens
  11. MHC I and II
  12. Antibodies
  13. B Lymphocytes Overview
  14. B Cell Stages
  15. B-Cell Activation
  16. Plasma B-Cells
  17. Memory B-Cells
  18. T-Lymphocytes Overview
  19. T-Cell Stages
  20. Types of Activated T-Cells


B-cells are white blood cells in the adaptive immune system known for producing antibodies. The antibody response to an infection or antigen is also known as the humoral immune response. These antibodies produced can either move freely in circulation or remain bound to the B-cell surface as a receptor. When surface-bound antibodies, or B-cell receptors, bind to a specific antigen, this activates a resting B-cell against that antigen. Activation prompts the B-cell to turn into an activated form in order to fight the threat.

Key Points