In molecular biology mir-550 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.
Further reading
Thorns C, Kuba J, Bernard V, Senft A, Szymczak S, Feller AC, Bernd HW (April 2012). "Deregulation of a distinct set of microRNAs is associated with transformation of gastritis into MALT lymphoma". Virchows Archiv. 460 (4): 371–7. doi:10.1007/s00428-012-1215-1. PMID22395483. S2CID22461297.
Xu L, Liang YN, Luo XQ, Liu XD, Guo HX (March 2011). "[Association of miRNAs expression profiles with prognosis and relapse in childhood acute lymphoblastic leukemia]". Zhonghua Xue Ye Xue Za Zhi = Zhonghua Xueyexue Zazhi. 32 (3): 178–81. PMID21535956.