Protocols

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  1. Preparation of genomic DNA from mouse tails or other small samples This simple protocol is widely used in hundreds of laboratories for genotyping transgenic or knockout mice, and for extracting DNA from small amounts of culture
  2. Recovery of DNA from low melting point agarose gels (organic solvent extraction) Hydroxyethyl-modified agarose reduces the number of hydrogen bonds between chains and can melt and solidify at lower temperatures than standard agarose. The ext
  3. Purification of DNA recovered from agarose and polyacrylamide gels by anion-exchange chromatography DNA fragments recovered from agarose gels, such as PCR products or digested DNA fragments, are resistant to further digestion. The reason for this resistance is
  4. Growth of Saccharomyces cerevisiae and its DNA preparation DNA prepared by this method is suitable for agarose gel electrophoresis, Southern blotting, subcloning, genomic library construction, PCR, or other methods that
  5. Preparation of small quantities of yeast DNA Yeast DNA can be prepared by digesting the cell wall and lysing the resulting protoplasts with SDS, and several milligrams of yeast DNA can be reproducibly prep
  6. Isolation of genomic DNA fragment ends in high-capacity vectors (small vector PCR) The genes of many eukaryotes contain far more DNA than a single recombinant can hold. This is especially true for most chromosomes. Therefore, it is necessary t
  7. Detection of DNA in agarose gels Nucleic acids in agarose gels can be detected by staining under UV light at a wavelength of 300 nm. Two methods for staining nucleic acids in agarose gels are i
  8. Oligonucleotide 5' terminal phosphorylation assay The following describes a reaction for labeling a 10 pmol high specific activity oligonucleotide. Labeling of different amounts of oligonucleotides can be accom
  9. Purification of radiolabeled oligonucleotides by CPB precipitation assay This protocol describes the separation of radiolabeled oligonucleotides from unadulterated radiolabeled material by quantitative differential precipitation with
  10. Ligation experiments of λ phage arms to exogenous genomic DNA fragments When a λ phage arm is attached to an exogenous genomic DNA fragment, two parameters must be taken into account: the molar ratio of the phage arm to the potenti
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