👉 The defense fluid, also known as the reticuloendothelial system (RES), is a network of cells and organs in the body that plays a crucial role in immune defense and clearance of pathogens, damaged cells, and foreign substances. This system primarily consists of macrophages, dendritic cells, and other phagocytic cells found in tissues like the liver, spleen, and lymph nodes. When these defense fluids encounter foreign invaders or cellular debris, they initiate an immune response by engulfing and digesting the threats. This process not only helps in eliminating pathogens but also aids in presenting antigens to other immune cells, thereby orchestrating a broader immune response. The defense fluid's ability to rapidly respond and efficiently clear threats is vital for maintaining overall health and preventing infections.
