Relatively short RNA molecules which can duplicate others have been artificially produced in the lab.

Relatively short RNA molecules have been artificially produced in labs, which are capable of replication.

In molecular biology MicroRNA-223 (miR-223) is a short RNA molecule.

In molecular biology miR-132 microRNA is a short non-coding RNA molecule.

In molecular biology mir-221 microRNA (and it's paralogue, mir-222) is a short RNA molecule.

In molecular biology mir-126 is a short non-coding RNA molecule.

Relatively short RNA molecules with such abilities have been artificially formed in the lab.

MiR-212 is a short non-coding RNA molecule.

In molecular biology mir-432 microRNA is a short RNA molecule.

MicroRNAs are short RNA molecules about 22 nucleotides in length.