| Pronunciation: | | 'âpsunin
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 WordNet Dictionary |
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| | Definition: | |
[n] an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes |
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OPSONIN is a 7 letter word that starts with O. |
| | See Also: | | antibody, blood serum, serum |
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| Biology Dictionary |
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| | Definition: | | An agent, usually an antibody, that makes a cell or microbe more vulnerable to being engulfed by a phagocyte. |
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