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sarongsong
2005-Nov-01, 09:35 AM
September 27, 2005 (http://www.lbl.gov/Science-Articles/Archive/ESD-Katrina-phylochip.html)
"...Originally developed for air sampling...the size of a quarter and packed with an array of 500,000 probes...can analyze a sample for the unique DNA signatures of 9,000 known species in the Phyla of bacteria and Archaea...within 24 hours from the start of the process..."

TheBlackCat
2005-Nov-01, 06:14 PM
This is actually nothing too special. Using DNA chips for this sort of thing has become pretty routine nowadays. It may seem incredible to people not already familiar with the technology, but is pretty run-of-the-mill stuff for people in the field.

sarongsong
2005-Nov-02, 02:23 AM
Looks pretty new to me---google's relatively meager 188 search returns (http://www.google.com/search?q=phylochip&sourceid=mozilla-search&start=0&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official) are almost entirely 21st century.

TheBlackCat
2005-Nov-02, 03:09 AM
Well, the perspective of "new" for molecular biology and biomedical engineering is very different that for most other disciplines. Astronomy has been around almost since civilization began. Physics has been around for many centuries. Molecular biology officially started on April 15, 1953 when Watson and Crick published their paper showing the correct structure for DNA. Everything that we consider part of "Molecular Biology" occurred after that point. Biomedical Engineering as a discipline also started around the 1950's, although the exact birth-date isn't anywhere near as exact.

DNA microarrays, as they are technically called (although the term "DNA chip" is often also used), were first used around 1995 (that is when the definitive paper on the subject was published). That is 10 years ago. That is about 1/5 of the entire lifespan of both molecular biology and biomedical engineering. We are talking something over twice as old as Galileo's telescope if you look at in terms of how long the field has existed. So although 10 years may seem pretty recent to most people, it is old news for molecular biology and biomedical engineering. I know this isn't a perfect analogy, but the point is that the perspective of "new" and "old" in molecular biology and biomedical engineering are very different than the perspectives most people, even scientists in other fields, have. Especially considering how fast new technologies spread in the field.

sarongsong
2005-Nov-02, 04:44 AM
Ah, I see what you mean now; thanks for a clear synopsis.

Ken G
2005-Nov-02, 08:11 PM
Is such a thing designed to tell you if you've been exposed to something nasty in time to start treatment before it gets a foothold?

publiusr
2005-Nov-02, 08:20 PM
Ah-choo!

Swift
2005-Nov-02, 09:06 PM
I hate to say this, but when I first saw the title of this thread, I thought of computer chips made of this (http://www.ellenskitchen.com/recipebox/phyllo.html). :doh:

publiusr
2005-Nov-04, 07:01 PM
Who knows? With whats going on today, you can never tell:

New Solar cell: http://www.spacedaily.com/news/solarcell-05k.html
Solar Antenna: http://www.spacedaily.com/news/satellite-tech-05j.html

Breakthrough: http://www.terradaily.com/news/stemcells-05g.html
Weird: http://www.livescience.com/scienceoffiction/051102_fractals.html
Anger good? http://www.livescience.com/humanbiology/051103_anger.html
Cellborg: http://www.livescience.com/technology/051027_cellborg_sensor.html
Rocket-bug: http://www.spacedaily.com/news/pollution-05zn.html
No chlo: http://www.terradaily.com/news/life-05zzzzzzzp.html


Mini-rotor: http://www.spacedaily.com/news/nanotech-05zzzzq.html

sarongsong
2005-Nov-04, 10:57 PM
Is such a thing designed to tell you if you've been exposed to something nasty in time to start treatment before it gets a foothold?I think that's part of it, in the context of the cited article above. Further:
"...There has been very little testing, officials said, of "biologicals" — namely, the airborne mold that appears to be causing much of the problem..."---'Katrina Cough' Floats Around (http://www.latimes.com/news/nationworld/nation/la-na-cough4nov04,0,7514027.story?coll=la-home-headlines)

Ken G
2005-Nov-09, 08:38 AM
Sounds like some things you need to know but don't want to-- like looking at your sink under a microscope!

publiusr
2005-Nov-09, 07:45 PM
Or your cutting board.

Ken G
2005-Nov-09, 08:03 PM
Yechh. :(

TheBlackCat
2005-Nov-10, 12:27 AM
Sounds like some things you need to know but don't want to-- like looking at your sink under a microscope!


Or your cutting board.

Or your mouth.

Ken G
2005-Nov-10, 03:46 AM
...after a milkshake and a nap.

Swift
2005-Nov-10, 05:09 PM
Or your mouth.
There was a Mythbusters recently where they had one of the guys and a dog each lick a culture dish and then incubated them to see which had more bacteria on them. The dog lost. :D

publiusr
2005-Nov-10, 06:12 PM
Awww.

publiusr
2005-Nov-18, 08:12 PM
New Solar cell: http://www.spacedaily.com/news/solarcell-05k.html
Solar Antenna: http://www.spacedaily.com/news/satellite-tech-05j.html



I had forgotten these

http://www.spacedaily.com/news/solarcell-03c.html
http://www.spacedaily.com/news/ssp-03b.html
http://www.spacedaily.com/news/solarcell-05i.html
http://www.terradaily.com/news/solarcell-05m.html New Solar

Nano Power
http://www.spacewar.com/news/nanotech-05zzzzt.html
http://www.terradaily.com/news/pollution-05zt.html Nano-Soak

Plastic chips:
http://www.spacedaily.com/news/chip-tech-05zn.html

Back to biology:
http://www.spacedaily.com/news/life-05zzzzzzzx.html Memories
http://www.spacedaily.com/news/life-05zzzzzzzy.html Designer life


http://www.spacedaily.com/news/asteroid-05za.html Asteroid

http://www.spacedaily.com/news/abm-05zn.html Blimps
http://www.spacewar.com/news/uav-05zzzzzq.html Airship
http://www.spacewar.com/news/aerospace-05zzt.html Transport
http://www.spacewar.com/news/abm-05zo.html Poland ABM

Misc.
http://www.terradaily.com/news/weather-05zzzb.html Twister
http://www.spacedaily.com/news/gravity-05r.html Gravity Well
http://www.spacedaily.com/news/materials-05zzc.html Field work

TheBlackCat
2005-Nov-19, 08:11 AM
We were talking about DNA microarrays the other day. Apparently a single chip and the reagents needed to run it cost about $1000 total. They can also only be used once. So I don't think they are going to have cold diagonsis DNA microarrays very soon.