Final answer:
The main site for clearance of antigen-antibody complexes from the blood is the spleen, which contains specialized cells called macrophages that engulf and digest these complexes. It contains specialized cells called macrophages that engulf and digest these complexes, helping to eliminate them from circulation.
Step-by-step explanation:
The main site for clearance of antigen-antibody complexes from the blood is the spleen. The spleen acts as a filtration system for the blood, removing old or damaged red blood cells and clearing out various foreign particles, including antigen-antibody complexes. It contains specialized cells called macrophages that engulf and digest these complexes, helping to eliminate them from circulation. The main site for the clearance of antigen-antibody complexes from the blood is the spleen. The spleen is a secondary lymphoid organ that plays a crucial role in the immune system. It filters the blood, removing old or damaged red blood cells and capturing and removing pathogens, including antigen-antibody complexes.
Within the spleen, there are specialized areas called the red pulp and the white pulp. The red pulp is involved in filtering and removing blood cells, while the white pulp is primarily responsible for immune responses, including the clearance of antigens and antibody complexes. Macrophages in the spleen play a key role in phagocytosing and clearing these immune complexes from the bloodstream.