Abstract
In situ hybridization (ISH) is one of the fundamental methods in developmental biology and neurobiology. Their first ISH protocols were reported in 1969 (Gall and Pardue, Proc Natl AcadSci USA 63:378-83, 1969). Since several decades, ISH based on the specific hybridization of 100-2000 nucleotides long probes enabled the localization of DNA/RNA sequences in tissues and cells with high cellular resolution. But sometimes a limited sensitivity notably in mineralized tissues (Obernosterer et al., Nature Protocols 2:1508-14, 2007).Here we describe a recent improvement of in situ hybridization efficiency by applying nucleotide locked nucleic acid (LNA)-incorporated oligodeoxynucleotide probes (20 LNA/DNA nucleotide probes) essentially used for noncoding miRNA and messenger RNAs.
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