In Caenorhabditis elegans, lin-4 and let-7 enclode 22- and 21-nucleotide RNAs, respectively, that function as key regulators of developmental timing. Because the appearance of these short RNAs is regulated during development, they are also referred to as “small temporal RNAs” (stRNAs). We show that...http://www.google.fr/patents/US7838664?utm_source=gb-gplus-shareBrevet US7838664 - MicroRNA molecules
