They can use that RNA to basically translate to synthesize our proteins. And these are the major differences between DNA and RNA viruses. And once again within the RNA viruses we have the plus strand RNA and the minus trans RNA virus. Plus transa is used directly as the mRNA to synthesize the proteins. The minus trans RNA means that RNA must first be transcribed into mRNA to actually synthesize those proteins. And a special type of RNA virus also known as the retrovirus exists.