APCS (Amyloid P Component, Serum): APCS is a critical component of the innate immune system, playing a role in the response to infection and injury. It binds to pathogens and damaged cells, facilitating their removal. APCS is also involved in the formation of amyloid plaques, linking it to conditions like Alzheimer's disease. Its function in modulating immune responses and inflammation makes it a target for therapeutic research....