lymphocyte activation

Lymphocyte activation is a process that occurs when specific immune cells, called lymphocytes, recognize and respond to foreign substances like viruses or bacteria. When these cells encounter an antigen (a marker from the invader), they become activated, which means they start to grow, differentiate, and multiply. This enhanced activity enables them to effectively target and destroy the invader. Lymphocyte activation is crucial for a strong immune response, helping the body to protect itself from infections and diseases. It also involves communication with other immune cells to coordinate a more effective defense.