1. Opsonins aid the immune system in a number of ways.2. After opsonin binds to the membrane, phagocytes are attracted to the pathogen. 3. Tunicate intelectin is an opsonin for phagocytosis by hemocyte. 4. With the antigen coated in opsonins , binding to immune cells is greatly enhanced. 5. They also express receptors to detect and adhere to endothelium and Fc receptors for opsonin . 6. The molecular mechanisms facilitating opsonin -dependent phagocytosis are different for specific opsonin / receptor pairs. 7. The molecular mechanisms facilitating opsonin-dependent phagocytosis are different for specific opsonin / receptor pairs. 8. Opsonins include Mfge8, Gas6, Protein S, antibodies and complement factors C1q and C3b.9. The recognition and clearance of invading microorganisms occurs through both opsonin -dependent and opsonin independent pathways. 10. Opsonization involves the binding of an opsonin , e . g ., antibody, to an epitope on an antigen.
