immune responses

The immune response is the body's way of protecting itself from harmful invaders like viruses, bacteria, and parasites. When these microorganisms enter, the immune system detects them as foreign and activates various defenses. White blood cells identify and attack these invaders, produce antibodies that trap or destroy them, and remember them for future protection. This process can cause symptoms like swelling, fever, or fatigue as the body fights off the infection. Once the threat is eliminated, the immune system scientists to prevent future infections by recognizing the same invaders more quickly and effectively.