Blood Structure Analysis Research Essay Assignment Paper
Blood Structure Analysis Research Essay Assignment Paper
As a rule, almost every genotypic examination begins with the determination of the presence of biological material on the carrier object, submitted for examination. Modern science has developed many primary and evidence-based methods for identifying blood, saliva, sperm, urine, and other tissues and body fluids. The fluid chosen for discussion is blood.
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Blood Structure Analysis Research Essay Assignment Paper
There are two groups of blood detection methods: preliminary, which only suggest the presence of blood in the object and are used mainly during the inspection of the scene of the incident, and evidentiary, which confirm the presence of blood on the carrier. According to Li et al (2011), evidence-based methods for the origin of bloodstains are based on the detection of hemoglobin and its derivatives, as well as substances characteristic only of blood. For instance, the spectral method is based on the ability of hemoglobin and its derivatives (methemoglobin, carboxyhemoglobin, hematoporphyrin) to absorb light waves of a certain length and form characteristic absorption spectra. According to Karger et al (2008), detection of the hemoglobin spectrum proves the presence of blood in the test object. There is also microspectral method (establishing blood in a microquantity of a substance) and emission spectral analysis (used in case of deep blood destruction, for example, during charring or rotting).
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