In the sci-fi movie "Taka", the identity security of a visitor can only be determined if it matches the sample file. According to EurekAlert!, a technology news sharing platform of the American Association for the Advancement of Science (AAAS), researchers from Columbia University and New York Gene Center have developed an inexpensive DNA sequencer that matches real-time DNA verification for real-time DNA verification. Identity becomes a reality.
The research team published in the latest issue of eLife magazine that the technology is widely used to identify victims in large-scale disasters and analyze the evidence collected on crime scenes. The most direct use is to identify errors in cancer experiments. Labeled or contaminated cell lines.
In the past, gene sequencing was performed by using a credit card-sized instrument called MinION to read nucleotide sequences through micropores, but because of high error rates, it was mostly used to study bacteria and viruses, and its use in human cells was still limited.
Now, researchers are further innovating to combine MinION, which costs only $1,000, with online human genetic data to verify human and cellular identity with near-perfect accuracy. MinION first sorts the random DNA sequences, selects individualized variants, and then uses Bayesian algorithm to randomly compare the variant mixture, compared with the variants in the genetic maps on other existing files, and quickly shrinks through each cross-check. Search range.
The researchers reported that they used this method to compare a facial cell sample with the 31,000 genomic reference data on the public database DNA.land, cross-checking the variants, and within a few minutes, easily verified the team's first The identity of the author Sophie Cha Aijie. The rest of the team and Columbia University students were initially sequenced in the same way in various genomics courses, and the results were accurate and reliable.
This cross-data re-identification technique is called "MinION Sketch", which is an inexpensive cell-certification tool that can be quickly applied to experimental research. Previously, research institutions have called for the lack of expensive machines for self-verifying cell lines. Most medical researchers either skip verification or send them to specialized laboratories, delaying important discoveries and treatments, and new technologies have solved this. The problem of wasting money. (Technology Daily)
Although corn is sweet, it is important to note that it is a medium glycemic index food, which means that the sugar content is not very high, so why does it taste sweet? This is a question for many people. In fact, corn tastes sweet because it contains soluble new sugar substances, but in general, its carbohydrate content is actually not high, so it is still suitable for people with high blood sugar to use as a staple food to help control blood sugar.
Corn can control blood sugar, but you have to be careful how you eat it
But the doctor is to remind everyone that although corn can help control blood sugar, but it is recommended that we corn food life or need to eat the right only important, if a single consumption of corn, as a medium glycemic level of food, corn will still lead us to elevated blood sugar please, in addition will lead to indigestion, body flatulence, etc., resulting in our body's nutrient supply is insufficient, so life we for eating duo to pay attention to.
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