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E. coli engineered to glow certain colors  (Source:
Seven strains of bacteria have been genetically engineered to express varied fluorescent proteins

For barcoding-related reasons, non-biological information can be encoded in microorganisms' DNA. But costly sequencing and other laboratory techniques/equipment have been needed to understand the information encoded -- until now.

Tufts University researchers Manuel A. Palacios and David R. Walt along with Harvard University chemistry professor George M. Whitesides have found an easier and less expensive way to read output for encoded information through the use of fluorescent signals according to The Epoch Times.

The technique, called steganography by printed arrays of microbes (SPAM), uses seven strains of bacteria that have been genetically engineered to express varied fluorescent proteins. Researchers assigned a color pair to a number, letter or character; making it so the seven strains encode 49 alphanumeric characters.

The bacteria are grown into specific color types on agar gel plates, and a piece of paper-like material called nitrocellulose is then pressed over the plate, thus imprinting it with the strains of bacteria.

As it dries, the coloring disappears, but the message can reappear once again by putting the paper-like material back onto the agar plate. This leads to the regrowth of the bacteria, which exposes color again.

What makes this technique different from others is its added layer of security. While many glowing microbes can be used, only the ones that can survive a dose of a certain antibiotic will reveal the correct message when unveiled to the correct light. For example, the research team created a message that said, "This is a bioencoded message from the walt lab at tufts university 2011." The drug kanamycin gave different bacteria that held the message, "you have used the wrong cipher and the message is gibberish."

This technique, which was created as part of the Defense Advanced Research Project Agency's (DARPA) Chemical Communications program, could be used to easy barcoding reading as well as a way to prevent counterfeiting.

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Bravo Tiffany...
By Boze on 9/29/11, Rating: 0
RE: Bravo Tiffany...
By ppardee on 9/29/11, Rating: 0
RE: Bravo Tiffany...
By Camikazi on 9/29/2011 4:46:06 PM , Rating: 5
Difference is science is trying to find those answers, religions just take them as fact no matter what happens. Yea scientists don't know everything but they ARE working everyday trying to prove or disprove theories to find the truth, when has religion ever tried to prove anything they say happened in their books?

RE: Bravo Tiffany...
By ppardee on 9/29/2011 7:45:50 PM , Rating: 2
Actually, scientists are working every day to prove that they're right. Everything they do works under the assumption that they're right, at least about the majority of their beliefs. Dark matter (and ether before it), to use my previous example, is a way to explain what they're seeing running under the assumption that what they believe is true. A rational person would see that the movement of the universe doesn't match the model we have based on rules for light, gravity and matter and would scrutinize the model, not invent some invisible thing to explain why the model doesn't work.

The thing holding back progress in REAL science is the scientists' steadfast belief in the doctrine that they live their lives under and work with. It has been proven that our model of physics is flawed, but instead of going back to square one we look for a 'unifying theory' to tie our observations together.

Using the method of scientists today, I can prove everything in the Judeo-Christian belief system. If we assume that God exists and is omnipotent, omnipresent and omniscient, it is very easy to explain everything in the Bible. This is one relatively small assumption compared to the huge assumptions the modern scientist makes while 'proving' anything. You can't use a system to prove the infallibility of itself, which is what science attempts to do.

RE: Bravo Tiffany...
By someguy123 on 9/29/2011 9:37:28 PM , Rating: 2
They're not trying to prove they're right. So many of these theorists are already dead. They're simply testing these theories to exhaustion.

You talk about dark matter as though it isn't a huge shift in the way we look at matter. The idea that matter can exist, yet be completely undetectable by current means, isn't a huge shift in logic?

These people are simply basing their studies on theories that appear to be or are our most accurate models of understanding. Centuries of research cannot be disregarded simply because newer aspects of reality do not fit perfectly. Instead they're updated and altered. I find it hilarious that someone could deem the task of foundationally rethinking an entire science as something that people are avoiding merely due to ego. If we changed the way we looked at science every time something didn't fit we would make significantly less progress.

RE: Bravo Tiffany...
By Samus on 9/30/2011 12:30:45 AM , Rating: 3
What the frak is everyone on about? The article describes a very useful technology that could visually identify e.coli infections in the channel. Thats it. There is no sensationalization. It's simply a great achievement in both cell manipulation and food safety.

RE: Bravo Tiffany...
By Samus on 9/30/2011 12:33:37 AM , Rating: 2
I know how daft some DT'ers are. To clarify, I'm being


RE: Bravo Tiffany...
By ShaolinSoccer on 9/30/2011 12:58:41 AM , Rating: 2
The idea that matter can exist, yet be completely undetectable by current means, isn't a huge shift in logic?

You can also say "The idea that God can exist, yet be completely undetectable by current means, isn't a huge shift in logic?"

I'm agnostic by the way...

RE: Bravo Tiffany...
By someguy123 on 9/30/2011 2:16:15 PM , Rating: 2
Right, it's practically religious, but they go at it scientifically trying to prove its existence. Simply because it fits their models does not mean it exists, which is why it's still a theory to be proven.

If this ever got out of the lab......
By Bad-Karma on 9/29/2011 3:36:49 PM , Rating: 2
Wife: Honey, Your glowing yellow.....

Husband: Yeah, stopped off at that roadside hamburger joint again...since it's yellow it's only E.coli this time..... Remember last time when I turned florescent blue......

By Mitch101 on 9/30/2011 9:46:08 AM , Rating: 2
Popped into my head the Movie was on this weekend.

Hey you got a glowing message on your back. Yea so do you.
What does mine say
It Says "Ray"
Cool what does mine say
Is says "Fvcked me"

Coded message
By thisisaname on 9/29/2011 7:49:55 PM , Rating: 3
And if you play the coded message backwards, does it play a satanic message?

Need to update your SPAM filters
By JediJeb on 9/30/2011 11:07:58 AM , Rating: 2
The technique, called steganography by printed arrays of microbes (SPAM),

Now not only will we get SPAM in our email, we will be getting it when our hamburger goes bad also.

By Joz on 9/29/2011 4:36:35 PM , Rating: 1
I checked the comments on this article a few hours ago, and then just now.

And I was like....

"WTF, I been trolled by the mods!!! WEERZ MY DELICOUZ CONTENT!!!"

And then I went back to watching HSotD on Netflix.

But anyway, wow. Huge amount of posts deleted. I didn't even think DT moderated the comment sections sometimes....

By MrBlastman on 9/29/2011 3:01:19 PM , Rating: 3
Q: What does this article have to do with Religion?

A: Nothing.

This article is about Science. Please stay on topic.

By MrBungle123 on 9/29/2011 8:28:58 PM , Rating: 2
Yes stay on topic! and on that note, have I ever told you guys that I like potatoes?

By radium69 on 9/30/2011 3:33:04 AM , Rating: 2
Baked, Mashed, Fried, boiled, steamed, roasted, calloped, diced, sliced, or grated?

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