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No, they are of course not there to cause allergies. It is thought (although not directly proven in human) that IgE is important to fight parasites and worms. They bind to antigens from the parasites, which leads to the secretion of histamines. This causes a local immune reaction (which also is a problem in allergies) which is helpful to fight the parasites. ...


I'm not sure that I have understood the question but ... HbeAg is a secreted variant of HbcAg (the core antigen of HBV). Unlike HbcAg, HbeAg is found in the blood. I believe that it is produced as a result of a splice variant of the corresponding RNA. The phenomenon described in these Figures is an example of seroconversion. Before seroconversion the ...

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