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About the Cover


Colorized image of a virus (vertical length, 696 nanometers) recently isolated in Australia from horses and one human who all died of acute respiratory disease. It is a previously unknown member of the genus Morbillivirus, being a distant relation of other members such as the measles, distemper, and rinderpest viruses. See page 94 and the News story on page 32. [Photo: CSIRO Australian Animal Health Laboratory]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)