Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: Phenomenon of RNA-induced gene silencing is a highly conservative mechanism among eukaryotic organisms. Several classes of small RNAs (siRNAs and miRNAs) 21-25 nt in length, which play a significant role in the processes of development of an organism, occurred important components of antiviral defence in animals and plants. This review shortly describes the main stages of gene silencing mechanism, features of antiviral RNA silencing in plants, invertebrates, mammals, ways of suppression of RNA-interference by viruses, as well as possible approaches of utilization of abovementioned phenomenon for struggling against viral infections.

63 1 Abbreviations: PTGS-posttranscriptional gene silencing dsRNA-double stranded RNA nt-nucleotide siRNA-small interfering RNA miRNA-micro RNA RISC-RNA-induced silencing complex RdRP-RNA-dependent RNA polymerase TMV-tobacco mosaic virus VIGS-virus induced gene silencing CP-coat protein TEV-tobacco etch virus VSV-vesicular stomatitis virus PFV-1-primate foamy virus 1 GFP-green fluorescent protein EBV-Epstein-Barr virus PVY-potato virus Y PVX-potato virus X ORSV-Odontoglossum rings pot virus HIV-Human immunodeficiency virus HBV-Hepatitis B virus HCV-Hepatitis C virus SARS-CoV-Severe Acute Respiratory Syndrome- Coronavirus CMV-Cucumber mosaic virus ZYMV-Zucchini mosaic virus WMV-2-Watermelon mosaic virus-2 TSWV-Tomato wilt spot virus TCSV-Tomato chlorotic spot virus PRSV-Peanut ring spot virus Role of siRNAs and miRNAs in the Processes of RNA-Mediated Gene Silencing during Viral Infections 1