The viruses of Picornaviridae are positive-strand RNA viruses, the genome organization and mechanisms of gene expression belong to highly conserved among them.
小RNA病毒科属于正链RNA病毒，该科各属病毒基因组结构和基因表达机制具有保守性。
2
All the 6 genotypes (9 strains) of measles virus showed DNA positivestrand, it means this RT-PCR method is sensitive for measles viruses.