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After determining that sperm cells are present (typically through staining and light microscopy) in a vaginal/rectal sample, the subject's epithelial cells are lysed by a standard DNA extraction method, like a phenol/chloroform extraction and their DNA extracted through normal means. The epithelial DNA in solution is removed and saved, while ...
Detergents, such as SDS or Tween-20, which are used to break open cells and release the DNA. Protease enzymes, such as Proteinase K, which are used to digest proteins that may be binding to the DNA. Phenol and chloroform, which are used to separate the DNA from other cellular components. Ethanol or isopropanol, which are used to precipitate the ...
Vigilant caution should be taken while using TRIzol (due to the phenol and chloroform). TRIzol is labeled as acute oral, dermal, and inhalation toxicity besides skin corrosion/irritation in the manufacturer MDS. [9] Exposure to TRIzol can be a serious health hazard. Exposure can lead to serious chemical burns, permanent scarring and kidney failure.
Phenol is a polar substance with a higher density than water (1.07 g/cm 3 [2] compared to water's 1.00 g/cm 3). When suspended in a water-phenol solution, denatured proteins and unwanted cell components dissolve in the phenol, while polar nucleic acids dissolve in the water phase. [3]
The method of sample acquisition can be refined to avoid unnecessary collection of inhibitors. For example, in forensics, swab-transfer of blood on fabric or saliva on food, may prevent or reduce contamination with inhibitors present in the fabric or food. [3]
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Phenol is also a versatile precursor to a large collection of drugs, most notably aspirin but also many herbicides and pharmaceutical drugs. Phenol is a component in liquid–liquid phenol–chloroform extraction technique used in molecular biology for obtaining nucleic acids from tissues or cell culture samples.
The nonyl group can be attached to the phenol ring at various locations, usually the 4- and, to lesser extent, the 2-positions, and can be either branched or linear. A branched nonylphenol, 4-nonylphenol, is the most widely produced and marketed nonylphenol. [ 12 ]
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