immunvédekezés

Immunvédekezés refers to the body's natural defense system against harmful invaders. This complex network of cells, tissues, and organs works together to identify and neutralize pathogens such as bacteria, viruses, fungi, and parasites. The immune system has two main branches: innate immunity and adaptive immunity. Innate immunity provides a rapid, non-specific response to a wide range of threats. It involves physical barriers like skin and mucous membranes, as well as specialized cells like phagocytes and natural killer cells. Adaptive immunity, on the other hand, is a slower, highly specific response that develops over time and creates immunological memory. This branch involves lymphocytes, specifically B cells that produce antibodies and T cells that directly kill infected cells or regulate the immune response. When an antigen, a foreign substance that triggers an immune response, is detected, the immune system mounts a coordinated attack. Antibodies can neutralize pathogens directly or mark them for destruction by other immune cells. T cells can eliminate infected cells or help orchestrate the overall immune response. This process is crucial for maintaining health and preventing disease. Vaccination is a form of artificial immunvédekezés, which safely introduces weakened or inactivated pathogens or their components to the body, stimulating the adaptive immune system to develop memory without causing illness.