Analyzing Blood Samples
* Suspicious stains that are discovered at the blastoff of a crime are not always what they count to be. In fact, even if they are confirmed as blood stains, a serologist must eliminate the possibility that they came from an animal quite than a human being. Once blood is verified to be human in origin, serologists are able to make amend guesses regarding the age, sex and blood group of the person from whom it came. Even a small amount of blood--such as that discovered under the fingernails of a victim who scratched at an attacker during an round down--can be examined under a microscope to yield clues to the attackers identity.
Semen Identification
* In a sexual assault investigation, serologists are enlisted to examine fluid swabbed from assault victims and charged with the business of identifying the presence of spermatozoa, or sperm cells. Semen analysis is conducted through microscopic examination.
Once semen has been identified, it can be study to characterize chemical substances that will indicate the ABO blood type of the donor, according to the book Practical Aspects of Rape Investigation, by FBI agent Robert R. Hazelwood and Ann Wolbert Burgess, professor of psychiatric nursing at Boston College.
Explaining Patterns
* In the wake of a violent crime, bloodstain patterns take into account criminal investigators with such information as the speed with which an hurt person attempted to flee from the scene or the localization principle and description of an attack. For example, sustained motion may be indicated by blood that is smeared across a wall or a piece of furniture, and blood cast off in lines of splashing typically...If you want to get a full essay, order it on our website: Ordercustompaper.com
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