
1) Antibody
Found on
https://www.crosswordclues.com/clue/opsonin

An opsonin (from the Greek opsonin, to prepare for eating), is any molecule that enhances phagocytosis by marking an antigen for an immune response (i.e., causes the phagocyte to `relish` the marked cell). However, the term is usually used in reference to molecules that act as a binding enhancer for the process of phagocytosis, especially antibo.....
Found on
http://en.wikipedia.org/wiki/Opsonin

(from the article `immune system`) ...of complement activation. But perhaps the most important result of C3b production is that great numbers of C3b molecules are deposited on the ... When a granulocyte reaches the invading organism, it attempts to ingest the invader. Ingestion of bacteria may require the help of still other ... [2 r...
Found on
http://www.britannica.com/eb/a-z/o/24

<protein> Substance that binds to the surface of a particle and enhances the uptake of the particle by a phagocyte. Probably the most important in mammals derive from complement (C3b or C3bi) or immunoglobulins which are bound through the Fc receptor). ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

(op´sә-nin) an antibody that renders bacteria and other cells susceptible to phagocytosis. adj., opson´ic., adj. immune opsonin an antibody that sensitizes a particulate antigen to phagocytosis.
Found on
http://www.encyclo.co.uk/local/21001

A substance, usually antibody or complement component, which coats a particle such as a bacterium and enhances phagocytosis by phagocytic cells.
Found on
http://www.encyclo.co.uk/local/21016

A substance derived from a dead bacteria, which is injected into the blood stream and confers resistance to that bacteria, i.e. a vaccine
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Substance that binds to the surface of a particle and enhances the uptake of the particle by a phagocyte. Probably the most important in mammals derive from complement (C3b or C3bi) or immunoglobulins (which are bound through the Fc receptor).
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Pronunciation: op′sŏ-nin Definitions: 1. Any blood serum protein that binds to antigens, enhancing phagocytosis ( C3b of the complement system, specific antibodies).
Found on
http://www.medilexicon.com/medicaldictionary.php?t=63064

[
n] - an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes
Found on
http://www.webdictionary.co.uk/definition.php?query=opsonin

opsonin 1. A protein fragment in blood that binds to the surface of an invading antibody and promotes its destruction by white blood cells. 2. In medicine, any substance that binds to particulate antigens and induces their phagocytosis by macrophages and neutrophils.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1493/

any molecule that binds to and coats the outside of a pathogen, identifying it for destruction by phagocytes (examples include antibodies and the complement proteins C3b and C4b)
Found on
https://courses.lumenlearning.com/microbiology/chapter/glossary/
noun an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes
Found on
https://www.encyclo.co.uk/local/20974

a constituent of normal or immune blood serum that makes invading bacteria more susceptible to the destructive action of the phagocytes.
Found on
https://www.infoplease.com/dictionary/opsonin
No exact match found.