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Related Concept Videos

Classification of Bones01:18

Classification of Bones

The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...
Bone Markings01:26

Bone Markings

Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Burn Injuries01:22

Burn Injuries

Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...

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Related Experiment Video

Updated: Jun 23, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

[Progress in individual identification of burned bones].

Hai-dong Liu1, Fu Ren, Rui-xian Xing

  • 1Research Institute of Anthropology, Liaoning Medical University, Jinzhou 121000, China. liuhaidong_2008@163.com

Fa Yi Xue Za Zhi
|April 29, 2009
PubMed
Summary

Burned bone DNA testing is crucial for identifying individuals and paternity in disasters and crimes. This review examines how temperature and time affect short tandem repeat (STR) typing in forensic analysis of charred remains.

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Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
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Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains

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Last Updated: Jun 23, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

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Published on: January 29, 2018

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
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Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains

Published on: November 30, 2021

Area of Science:

  • Forensic Science
  • Molecular Biology
  • Genetics

Context:

  • Burned bone DNA analysis is increasingly vital for identification in mass disasters and criminal investigations.
  • Short tandem repeat (STR) markers are a cornerstone of forensic genetics, enabling individual and kinship analyses.
  • Charred bone presents significant challenges for DNA extraction and amplification due to thermal degradation.

Purpose:

  • To review the impact of varying temperatures and durations on STR typing success from burned bone samples.
  • To discuss optimal STR locus selection for degraded DNA profiles.
  • To evaluate effective DNA extraction methodologies for burned bone specimens.

Summary:

  • This article reviews the effects of thermal exposure (temperature and time) on the reliability of STR typing from burned bone.
  • It explores the selection of appropriate STR loci that are more resilient to degradation.
  • The discussion includes advancements in DNA extraction techniques tailored for challenging burned bone matrices.

Impact:

  • Provides critical insights for forensic scientists analyzing skeletal remains from fires and explosions.
  • Aims to improve the accuracy and success rate of DNA-based identification in challenging forensic cases.
  • Contributes to the standardization and optimization of burned bone DNA testing protocols.