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opsonin
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The answer OPSONIN has 1 possible clue(s) in existing crosswords.
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Definitions of opsonin in various dictionaries:
noun - an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes
An antibody in blood serum that causes bacteria or other foreign cells to become more susceptible to the action of phagocytes.
noun - an antibody of blood serum
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Keep reading for additional results and analysis below.
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| Sort of poison needing new factor in serum |
| Last Seen in these Crosswords & Puzzles |
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| Apr 6 2002 The Times - Cryptic |
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| 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. |
| an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes |
| An antibody or other substance which binds to foreign microorganisms or cells making them more susceptible to phagocytosis. |
| Opsonin description |
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An opsonin (from the Greek opsōneîn, to prepare for eating) is any molecule that enhances phagocytosis by marking an antigen for an immune response or marking dead cells for recycling (i.e., causes the phagocyte to "relish" the marked cell). Opson in ancient Greece referred to the delicious side-dish of any meal, versus the sitos, or the staple of the meal. * Opsonization (also, opsonisation) is the molecular mechanism whereby molecules, microbes, or apoptotic cells are chemically modified to have stronger interactions with – to be more "delicious" to – cell surface receptors on phagocytes and NK cells. With the antigen coated in opsonins, binding to immune cells is greatly enhanced. Opsonization also mediates phagocytosis via signal cascades from cell surface receptors.Opsonins aid the immune system in a number of ways. In a healthy individual, they mark dead and dying self cells for clearance by macrophages and neutrophils, activate complement proteins, and target cells for destruction through the action of natural killer (NK) cells. |