these do exist, https://en.wikipedia.org/wiki/Circular_RNA https://en.wikipedia.org/wiki/Circular_RNA the methodology for production of a specified RNA plasmi

these do exist, https://en.wikipedia.org/wiki/Circular_RNA https://en.wikipedia.org/wiki/Circular_RNA the methodology for production of a specified RNA plasmid like tech is new. https://en.wikipedia.org/wiki/Plasmid#RNA_plasmids https://en.wikipedia.org/wiki/Plasmid#RNA_plasmids plasmids have been exploited to manipulate genetic expression systems prior to crispr tech