Question about touch DNA

cheapbag214s · Posted: Sun 11:58, 06 Oct 2013 Post subject: Question about touch DNA

Question about touch DNA,[url=http://giuseppezanottioutletonline.webmium.com/][b]giuseppe zanotti outlet Sale[/b][/url]
I've seen that yes,[url=http://giuseppezanottioutletonline.webmium.com/][b]http://giuseppezanottioutletonline.webmium.com/[/b][/url], dna can remain after a wash cycle. However,[url=http://woolrichoutletfr.halod.com/][b]Doudoune Woolrich Parka[/b][/url], since they use detergent and enzymes in the process of breaking down cells to release dna, I don't think its chances of lasting through a washing are all that great.
I've seen many forensic shows where the perp/s washed their clothing after having committed a crime/murder to wash off blood, semen,[url=http://cheapnikesoccercleatsmercurial.webmium.com/][b]cheap nike soccer cleats mercurial[/b][/url], etc. Like anything else, depending on the amount of fluids, etc and where it was,[url=http://cheapnikesoccercleatsmercurial.webmium.com/][b]nike soccer cleats mercurial[/b][/url], sometimes the blood or semen will remain inside seams of jeans and in crevices of clothing. They can then extract the DNA from them. I've seen it with jeans,[url=http://monclerwesteoutletbillig.albirank.net/][b]http://monclerwesteoutletbillig.albirank.net/[/b][/url], sneakers, shoes, and in the wrist seams of shirts, collars etc.
I don't know that it will always remain and it also depends on the type of DNA but it can survive a washing
I've seen many forensic shows where the perp/s washed their clothing after having committed a crime/murder to wash off blood, semen,[url=http://woolricharcticparkauomooutlet.olimx.com/][b]Woolrich Parka Italy[/b][/url], etc. Like anything else, depending on the amount of fluids, etc and where it was, sometimes the blood or semen will remain inside seams of jeans and in crevices of clothing. They can then extract the DNA from them. I've seen it with jeans, sneakers,[url=http://duveticadeutschlandshop.halod.com/][b]Duvetica Jacken[/b][/url], shoes, and in the wrist seams of shirts,[url=http://rogervivierhighheels.albirank.net/][b]sell cheap Roger Vivier High Heels Roger Vivier outlet online store[/b][/url], collars etc.
I don't know that it will always remain and it also depends on the type of DNA but it can survive a washing
if people do wash like I do,[url=http://rogervivierhighheels.albirank.net/][b]Roger Vivier online store[/b][/url], I think it would have a better chance to live. Water temperature is probably a factor, too.
I agree with this statement. Touch DNA is a result of "forced action",[url=http://woolricharcticparkauomooutlet.olimx.com/][b]Woolrich Arctic Parka Uomo Outlet Woolrich Parka Italy Outlet[/b][/url],which leaves skin cels, not just gentle touching, which does not.
how much force are we talking here? A buccal swab is kind of gentle, yet it picks up skin cells from the cheek and hat bands and steering wheels carry it. I think by force, they mean scraping action. But I think you are on target as it pertains to a wash cycle. Something that is embedded more forcibly into a material would be more likely to survive one. Fluids get into the fibers of clothes and don't always wash out without hard scrubbing so I guess dna would be affected in a similar fashion since it's inside cells. Some things come out more easily than others and what is used to wash them makes a difference too.(Like bleach)Skin cells might be more loosely embedded and be more likely to wash out, but 'set' according to how much force is applied.
Abstract: Nine pairs of Simply Basic 100 percent nylon panties with a 100-percent cotton gusset and nine pairs of Penman's Hi-Cut 100 percent cotton panties were used in this study. They were selected because they are typical of what is encountered in casework. To better simulate casework conditions,[url=http://woolrichswedense.gengfl.com/][b]woolrich online shop sweden[/b][/url], the panties were machine washed and dried before they were used in the study. The applied semen stains were allowed to dry overnight. The laundered semen stains on the panties were tested with standard tests used by the Royal Canadian Mounted Police Forensic Laboratories, and they were then subjected to DNA typing. Tests for semen identification included the Fast Blue Test for acid phosphatase, microscopic identification of spermatozoa, and the PSA ABAcard Test for detection of prostate specific antigen (PSA). DNA was extracted from the samples via a differential organic extraction, and the DNA was typed by using PCR amplification of Short Tandem Repeats (STRs). The findings showed that compared to control semen stains, laundered stains on cotton panties had reduced but significant numbers of spermatozoa remaining, and they still tested positive for the presence of PSA. Further, they tested negative for acid phosphatase,[url=http://woolricharcticparkauomooutlet.olimx.com/][b]Woolrich Arctic Parka[/b][/url], retained approximately 43 percent of their DNA, and produced complete DNA profiles. Compared to control semen stains, laundered stains on nylon panties tested negatively for PSA and acid phosphatase,[url=http://rogervivierweddingshoes.olimx.com/][b]cheap 2013 roger vivier wedding shoes for sale[/b][/url], retained less DNA and spermatozoa than was observed on laundered cotton panties,[url=http://rogervivierweddingshoes.olimx.com/][b]roger vivier shoes for sale[/b][/url], and did not always yield DNA profiles. Given the persistence of spermatozoa on cotton, investigators may be able to obtain the DNA typing profile of a perpetrator of sexual assault even after a victim has laundered her clothes.
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