B-cell lymphocytes

B-cell lymphocytes are a type of white blood cell that play a crucial role in the immune system. They are responsible for producing antibodies, which are proteins that help identify and neutralize foreign invaders like viruses and bacteria. When B-cells encounter an antigen (a substance that triggers an immune response), they can transform into plasma cells and generate specific antibodies against it. This process not only helps eliminate pathogens but also contributes to long-term immunity, enabling the body to respond more effectively if the same pathogen is encountered again in the future.