Bone mineral residues derived from stone tool production and use can survive on lithic artefacts for extended periods of time. They thus form a line of evidence for reconstructing Palaeolithic human activities. Despite having been frequently reported on ancient stone tools, the identification of these ...
Third, there are some conserved elements in the miRNA:mRNA interaction consisting of: a core of 9–7 nt in the 3 UTR, which is complementary to the sequence core at the 5 end of the miRNA (Figure 1(3)); the stacked G:C or G:U base in the RNA duplexes that form a bulge, ...