1. 
   Opsonin
   An opsonin is any molecule that targets an antigen for an immune response. However, the term is usually used in reference to molecules that act as a binding enhancer for the process of phagocytosis, especially antibodies, which coat the negatively-charged molecules on the membrane. Molecules that a...
   Found op http://en.wikipedia.org/wiki/Opsonin
   
   
2. 
   opsonin
   [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 op http://www.webdictionary.co.uk/definition.php?query=opsonin
   
   
3. 
   Opsonin
   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 op http://www.encyclo.co.uk/visitor-contributions.php
   
   
4. 
   opsonin
   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 op http://www.encyclo.co.uk/visitor-contributions.php
   
   
5. 
   opsonin
   <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 op http://www.mondofacto.com/facts/dictionary?opsonin
   
   
6. 
   opsonin
   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 op http://wordnetweb.princeton.edu/perl/webwn?s=opsonin
   
   
7. 
   opsonin
   (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 op http://www.encyclo.co.uk/local/21001
   
   
8. 
   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 requi...
   Found op http://www.britannica.com/eb/a-z/o/24
   
   
9. 
   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 op http://www.wordinfo.info/words/index/info/view_unit/1493/
   
   
10. 
    Opsonin
    A substance, usually antibody or complement component, which coats a particle such as a bacterium and enhances phagocytosis by phagocytic cells.
    Found op http://www.microbiologybytes.com/iandi/ImmGloss.html
    
    
11. 
    opsonin
    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 op http://www.medilexicon.com/medicaldictionary.php?t=63064
    
    
12. 
    opsonin
    1) Antibody
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/opsonin/1
    
    

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