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A hypersensitive reaction to the administration of a foreign serum, characterized by fever, swelling, skin rash, and enlargement of the lymph nodes.
(Pathology) an allergic reaction, such as vomiting, skin rash, etc, that sometimes follows 2-3 weeks after an injection of a foreign serum
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|Noun||1.||serum sickness - a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum|