To make (bacteria or other cells) more susceptible to the action of phagocytes by use of opsonins
To coat an organism with antibodies or a complement protein so as to make it palatable to phagocytes
To facilitate destruction of pathogens by phagocytic ingestion or lysis by complement through the action of adherent antibodies
{f} (Biochemistry) produce opsonin (substance in the blood which aids in the elimination of bacteria); function as opsonin; make cells or bacteria more susceptible to phagocytes (also opsonise)