单词	viroid
释义	viroid /ˈvʌɪrɔɪd / noun Microbiology An infectious entity affecting plants, smaller than a virus and consisting only of nucleic acid without a protein coat.Prions do not contain DNA or RNA as do fungi, bacteria, viruses, viroids, or any other previously known infectious entities.... Fast, accurate tests, based on antibody testing technology, were developed for trichinosis in pigs; for anaplasmosis, a costly parasitic disease in cattle; and for plant viruses and viroids. They include animals, insects, and nematodes (while vine diseases include the microbes bacteria, fungi, phytoplasma, viroids, and virus).
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