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Nature 392, 770 (23 April 1998) | doi:10.1038/33834;

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Scrapie infectivity found in resistant species

Experimental and epidemiological evidence indicates that bovine spongiform encephalopathy (BSE) has been transmitted to humans although the mechanism of this transmission is unknown. Hamsters and chickens are clinically resistant to the transmission of BSE, but we report results that raise concern over the possible long-term persistence of infectivity in such clinically resistant species and which may have implications for the control of BSE.

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