opsonin

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Related to Opsonins: opsonization, phagosome, phagolysosome, Fc receptors, Complement system, Anaphylatoxins

opsonin

 [op´sŏ-nin]
an antibody that renders bacteria and other cells susceptible to phagocytosis. adj., adj opson´ic.
immune opsonin an antibody that sensitizes a particulate antigen to phagocytosis.

op·so·nin

(op'sŏ-nin),
Any blood serum protein that binds to antigens, enhancing phagocytosis (for example, C3b of the complement system, specific antibodies).
[G. opson, boiled meat, provisions, fr. hepsō, to boil, + -in]

opsonin

/op·so·nin/ (op´son-in) an antibody that renders bacteria and other cells susceptible to phagocytosis.opson´ic
immune opsonin  an antibody that sensitizes a particulate antigen to phagocytosis, after combination with the homologous antigen in vivo or in vitro.

opsonin

(ŏp′sə-nĭn)
n.
An antibody or product of complement activation in blood serum that causes bacteria or other foreign cells to become more susceptible to the action of phagocytes.

opsonin

[op′sənin]
Etymology: Gk, opsonein, to supply food
an antibody or complement split product that, on attaching to foreign material, microorganisms, or other antigens, enhances phagocytosis of that substance by leukocytes and other macrophages. opsonize, v.

op·so·nin

(op'sŏ-nin)
A substance that binds to antigens, enhancing phagocytosis.
[G. opson, boiled meat, provisions, fr. hepsō, to boil, + -in]

opsonin

One of a number of substances, especially an antibody, naturally present in the blood that bind to the surface of bacteria to make them more readily susceptible to attack and destruction by PHAGOCYTES.

opsonin

a type of ANTIBODY which binds to ANTIGENS, increasing their susceptibility to phagocytosis by other antibodies.

opsonin

a substance such as antibody, complement or properdin that renders bacteria and other cells more susceptible to phagocytosis.

immune opsonin
an antibody that, when bound to particulate antigen, enhances in vivo or in vitro phagocytosis; the Fc portion of the antibody binds to an Fc receptor on the surface of the phagocytic cell.
References in periodicals archive ?
This is due to the fast adsorption and conformational change of opsonins in the blood and bacterial proteins, as well as the interaction of the bacterial cell surface receptors to the exposed functional peptides (213).
In some cases plant lectins have been shown to be able to act as opsonins in invertebrate phagocyte systems, and concanavalin A receptors have been described on oyster hemocytes (Sami et al.