Word: harned
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Dates: during 1990-1999
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...Associate Professor of Tropical Public Health Donald A. Harn, who works on vaccines against the tropical disease schistosomiasis, says that finding the right antigen when attempting a recombinant vaccine, as they are known, "is the most critical and difficult thing...
...Harn says that one problem researchers face is that the immune system often fails to respond to such isolated antigens. Simply finding an antigen present in or on the virus is not sufficient. To boost the response, solutions known as adjuvants are included in the injection of the antigen...