by blogger jgl
AAFS Annual Meeting (BYOS):
This was a neat one. Michael Rieders tells the story of his obsession (sort of) with Salvador Dali and how he really wanted to get his hands on Dali's DNA.
How did he do it? After many offers of materials lacking reliability ("I have his moustache!"), eventually a friend of Dali turned up with a nasogastric tube that Dali used when recovering from a house fire incident during his later years. It had some blood and goop on it and resulted in a single male profile.
Why do it? For fun, mainly. But it does open up the chance to authenticate some works of art that may have Dali's "fluids" on them. Or test his DNA for a genius gene. Cloning was mentioned.
Two camments for any of my students or amateur forensic scientists... the nasogastric tube was stored for years in paper. Good news, right... air dry, no moisture, no bacteria to degrade the DNA. Also, it was mentioned they used the Takayama test to determine there was, in fact, blood on the tube. Takayama!? Who does crystal tests these days? Why not TMB? Is there a sensitivity issue I'm not aware of, or are just dealing with show-offs?
19 comments:
The Takayama crystal test was probably used because it's more specific than TMB (i.e., tetramethylbenzidine). The test is specific to the ferroprotoporphyrin ring structure that is in the alpha- and beta-chains in hemoglobin. It is not, however, unique to hemoglobin; it can be found most notably in catalase, peroxidase, and myoglobin. TMB, on the other hand, has a number of sources of false positives, which include botanical sources (e.g., horseradish), animal sources (e.g., pus), and chemical oxidants (e.g., bleach). Given that the item was a nasogastric tube, fluids such as mucus and stomach acids could potentially have been problematic. In the 95 years since Takayama's publication, this test has fallen out of favor in forensic science, and that's a shame. This appears to be the result of a lack of understanding about the test, further propagated by one generation being incompletely trained by its predecessor. In the right hands, this test is almost certainly the most sensitive method available. I can get results from a flake of blood that would fit in the hole in the center of the "9" on a face of a dime... and give you half of it back. (Look for the "9" in the year of any dime from the 20th century.)
Hello. And Bye. Thank you very much.
Hello. And Bye. Thank you very much.
Hello There. I found your weblog the usage of msn. This is an extremely well written
article. I will make sure to bookmark it and come back to read more of
your helpful info. Thank you for the post. I'll certainly return.
Also visit my web-site :: オークリー サングラス
I am curious to find out what blog system you're using? I'm
having some small security problems with my latest blog and I
would like to find something more secure. Do you have any solutions?
Look into my webpage ... サングラスレイバン
I was able to find good information from your content.
My web-site オークリーメガネ
Hi there Dear, are you actually visiting this
site regularly, if so then you will without doubt
get nice knowledge.
Also visit my web page :: レイバン店舗
Somebody necessarily assist to make severely articles I'd state. This is the first time I frequented your website page and thus far? I amazed with the analysis you made to make this particular post extraordinary. Magnificent job!
my web-site - レイバン ゴーグル
Hi, I check your blogs on a regular basis. Your story-telling style
is awesome, keep it up!
Here is my homepage オークリー サングラス
Awesome post.
Feel free to surf to my site; サングラス オークリー
If you desire to grow your familiarity just keep visiting this site and be updated
with the most up-to-date information posted here.
my web-site :: 365beverages.co.uk
It's very simple to find out any matter on net as compared to books, as I found this article at this website.
Here is my site; オークリー サングラス
I almost never leave a response, however I looked through some remarks on this page "BYOS - Dali DNA".
I do have 2 questions for you if you do not mind. Is it simply me or do a few of these
remarks appear like they are left by brain dead folks?
:-P And, if you are writing on other social sites, I'd like to follow you. Would you make a list of all of all your social sites like your Facebook page, twitter feed, or linkedin profile?
My web blog - オークリー アウトレット
You could definitely see your skills within the work you write.
The world hopes for even more passionate writers
like you who are not afraid to mention how they believe.
All the time go after your heart.
Here is my webpage オークリー サングラス
hi!,I really like your writing very much! proportion we keep in
touch extra approximately your article on AOL? I need an expert on
this house to solve my problem. Maybe that's you! Having a look forward to look you.
Feel free to visit my blog - レイバンサングラス
After I originally commented I appear to have clicked on the -Notify me when new comments are added- checkbox and from now on whenever
a comment is added I receive 4 emails with the exact
same comment. There has to be a means you are able to remove me from that service?
Appreciate it!
my website ... オークリーサングラス
Hemorrhoidal inflammation are not only hard for us to discuss on account of the unpleasant nature
of them, they are also painful and cozy for those would you have to keep up with the most important condition. *
Mix one desert spoon of vinegar into one cup of lukewarm water and apply with cotton wool swabs,.
However, if left unattended they can cause more discomfort
and could become infected.
Here is my webpage: hemorrhoid treatment overland park ()
Thanks a million and please keep up the
gratifying work.
Look into my blog..
Manfaat wortel
Tanda tanda kanker serviks
Cara mengatasi perut kembung
Cara membersihkan telinga bayi
Gejala usus buntu
Cara mencegah kanker
Penyebab berat badan naik
Cara meningkatkan kesehatan pencernaan
Manfaat telur
Thank you for sharing the info
As well as informing the latest developments in face creams, diets and exercise regimes, DNA testing can also save lives with early diagnoses of terminal illness. DNA testing
Post a Comment