http://www.biologynews.net/archives/2013/05/06/new_device_can_extract_human_dna_with_full_genetic_data_in_minutes.html
Summary:
A new device developed by University of Washington engineers and NanoFacture have created a device that can extract DNA from fluid samples. The new machine is more efficient and simpler than the old way. The machine will help with genome sequencing, disease diagnosis, and forensic investigations. Conventional methods use a centrifuge to separate DNA molecules. Another process would be to strain the DNA from a fluid sample with a micro-filter. These processes take 20 to 30 minutes to do and require excessive toxic chemicals.
University of Washington engineers designed microscopic probes that dip into a fluid sample, such as saliva, an apply an electric field within it. This draws particles to concentrate around the probe. Large particles hit the probe and swerve away, but DNA-sized molecules stick to the probe and get stuck to it. This process only takes 2 to 3 minutes.
Themes of Nature of Science:
Science is collaborative- "University of Washington engineers and NanoFacture..."
Role of motivation and curiosity- "When you think of the current procedure, the equivalent is like collecting human hairs using a construction crane."
I think that it's funny and amazing how precise they have made these machines to extract DNA. In class we just got a little bit of gooey stuff on the end of a stick, and this machine can analyze it and separate in in just minutes. Also the machine looks like the one that the guy sells in The Pursuit of Happiness.
ReplyDeletehaha it does look like the "time machine". it is a big improvement going from 30 minutes to 2 minutes. i wonder if it is painful at all...
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