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Related Concept Videos

DNA Isolation01:24

DNA Isolation

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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DNA Isolation01:34

DNA Isolation

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DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.
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Related Experiment Video

Updated: Jan 17, 2026

Application of DNA Fingerprinting using the D1S80 Locus in Lab Classes
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[Dental Floss-derived Biological Sample Collection, DNA Extraction and STR Typing].

Ze-Qin Li1, Fang Yuan1, Na Liu1

  • 1School of Forensic Medicine, Shanxi Medical University, Shanxi Key Laboratory of Forensic Medicine, Jinzhong 030619, Shanxi Province, China.

Fa Yi Xue Za Zhi
|September 16, 2025
PubMed
Summary
This summary is machine-generated.

Directly cutting dental floss or using cotton swabs for sample collection, combined with magnetic bead DNA extraction, yields the best results for forensic identification. Proper storage conditions are crucial for maintaining DNA integrity and STR typing accuracy.

Area of Science:

  • Forensic Science
  • Molecular Biology
  • Genetics
Keywords:
DNA extractionSTR typingdental flossforensic geneticssample collection

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