Usually used to characterise a host whose initial reactions to infection are so strong as to limit further development of the invading parasite.
hypersensitive (high' pur SEN suh tiv) 1. Excessively or abnormally sensitive; fragile. 2. Unusually susceptible to drugs, diseases, etc.Found on http://www.wordinfo.info/words/index/info/view_unit/1018/11
The state of being abnormally sensitive. It often refers to an extreme reaction to a pathogen (e.g., the formation of local lesions by a virus or the necrotic response of a leaf to bacterial infection). Found on http://ppathw3.cals.cornell.edu/glossary/Defs_H.htm
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