mmu-mir-10b: Mmu-mir-10b is a microRNA that has been predicted to bind to four sites within the 3' untranslated region (3'UTR) of various genes [PMC4902921]. It is a paralogous sequence of mmu-miR-10a, with the two sequences differing at only one or two positions [PMC1347474]. Mmu-mir-10b has been found to regulate the expression of ACO1, along with MMU-MIR-339 [PMC6391818]. It has also been identified as one of the unique microRNAs found in either CM or NI MV [PMC5946432]. In a study, Rb1 was found to significantly inhibit the expression of mmu-mir-10b, along with other microRNAs such as mmu-miR-134 and mmu-miR-191 [PMC9120625]. MicroRNAs are named based on various criteria, including species designation and nucleotide differences in mature miRNAs [PMC3521996]. Mmu-mir-10a and mmu-mir-10b have been identified as heterozygous mutants without mosaicism in F1 pups [PMC3797721]. Genome editing activities have been confirmed for mmu-mir-10b at a rate of 1.2% in sequencing analysis [PMC3797721]. TALEN pairs have been used for genome editing of mmu-mir-10a and mmu-mir-10b in NIH3T3 cultured cell line experiments [PMC3797721]. Mmu-mir-10b has also been found to be downregulated in early-symptomatic α-synuclein (A30P)-transgenic mice, along with other microRNAs such as mmu-miR-212 and mmu-miR495. It has been associated with spermatogenesis and enhanced spermatogonial stem cell proliferation [PMC5116472]. These findings contribute to our understanding of the functions of microRNAs in various diseases and provide insights for diagnosis, treatment, and prevention [PMC7347495].