Clonal Selection Theory

Clonal Selection Theory explains how the immune system responds to infections. When an pathogen (like a virus) enters the body, specific immune cells called B cells with receptors matching the pathogen's features are activated. These activated B cells multiply rapidly, creating a clone or group of identical cells that produce antibodies targeting that specific pathogen. This process ensures a targeted and efficient immune response. Essentially, the body "selects" the right B cells to fight each invader, amplifies them, and eliminates the threat, providing protection and learning for future encounters.