Picornaviridae
(pē-kôr′nə-vîr′ĭ-dē)- A family of very small nonenveloped viruses having a core of single-stranded RNA and including the polioviruses, coxsackieviruses, and echoviruses.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.