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Host invasion by microorganisms (view source)
Revision as of 10:23, 22 August 2008
, 10:23, 22 August 2008→[[Parasites - WikiBlood|Parasites]]
=[[Parasites - WikiBlood|Parasites]]=
=[[Parasites - WikiBlood|Parasites]]=
==Types==
Parasites broadly include:
*Helminths (worms)
*Arthropods (insects)
*Protozoa (single-celled eukaryotes)
==Immunity to Parasites==
The immune system relies on granulocytes ([[Mast Cells - WikiBlood|mast cells]] and [[Eosinophils - WikiBlood|eosinophils]] and the production of [[Immunoglobulin G - WikiBlood|IgE]] antibody to combat parasitic infection. Once produced in response to danger signals, IgE attaches to circulating granulocytes. IgE then binds to the parasite, signals mast cell and eosinophil degranulation, and causes enzymatic digestion of the intruder.
=References=
=References=
*<div id="Janeway">{{citation|initiallast = Murphy|initialfirst = K|2last = Travers|2first = P|finallast = Walport|finalfirst = M|year = 2008|title = Janeway's Immunobiology|ed = 7th |city = New York|pub = Garland Science Publishing}}</div>
*<div id="Janeway">{{citation|initiallast = Murphy|initialfirst = K|2last = Travers|2first = P|finallast = Walport|finalfirst = M|year = 2008|title = Janeway's Immunobiology|ed = 7th |city = New York|pub = Garland Science Publishing}}</div>