Monday January 22, 2018

‘It is Definitely a Woman’ ; DNA tests Reveal First Strong Evidence of a Female Viking Warrior

The researchers say it's the first confirmed remains of a high-ranking female Viking warrior

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Programme cells
Scientists have found that cells can be programmed with pre-defined RNA commands, in the manner of a computer's microprocessor VOA
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Berlin, September 12, 2017 : Scientists say DNA tests on a skeleton found in a lavish Viking warrior’s grave in Sweden show the remains are those of a woman in her 30s.

While bone experts had long suspected the remains belong to a woman, the idea had previously been dismissed despite other accounts supporting the existence of female Viking warriors.

Swedish researchers used new methods to analyze genetic material from the 1,000-year-old bones at a Viking-era site known as Birka, near Stockholm.

Charlotte Hedenstierna-Jonson of Uppsala University said Monday the tests show “it is definitely a woman.”

Hedenstierna-Jonson said the grave is particularly well-furnished, with a sword, shields, various other weapons and horses.

Writing in the American Journal of Physical Anthropology, the researchers say it’s the first confirmed remains of a high-ranking female Viking warrior.

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Research Yields Possible Blood Test for Cancer

The test was most successful with ovarian cancer, followed by liver, stomach, pancreatic, esophageal, colorectal, lung and breast cancers.

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Scientists have found a way of detecting cancer through blood tests. IANS
Scientists have found a way of detecting cancer through blood tests. IANS
  • Scientists have developed a blood test which can detect cancer
  • This blood test can detect eight types of cancer
  • They have developed a way of detecting DNA which comes specifically from cancer

Scientists at Johns Hopkins University (JHU) are reporting progress in developing a blood test to detect eight types of cancer at an early stage, including some of the most deadly ones that are difficult to detect with existing screening tools.

In a study published Thursday in the journal Science, JHU scientists examined how well their experimental test detected cancer in people already diagnosed with the disease.

Also Read : How broccoli can help keep colorectal cancer away 

This blood test can detect 8 types of cancers. Pixabay
This blood test can detect 8 types of cancers. Pixabay

In blood samples from more than 1,000 patients already diagnosed with cancer, the test detected the cancer in about 70 percent of the subjects.

Nikolas Papadopoulos, a professor of oncology and pathology at Johns Hopkins Sidney Kimmel Cancer Center, said the test is noninvasive.

“All [patients] have to do is give a little bit of blood,” he told VOA. “What we detect is DNA, which is the genetic material that is present in all of our cells, but we have developed a method to detect DNA that comes only from the cancer cells.”

Scientists have been focused on liquid biopsy tests which look for mutated DNA that floats freely in the blood and in cancer-related proteins to try to find cancer before it spreads. They focused on cancers for which there is little or no early-screening process — the ones that are often serious enough to be deadly by the time they are detected.

“That’s one of the tricks that cancer plays on us,” Papadopoulos said. “It grows inside of us and we feel fine until we start having something like a pain or a cough or something like that. And many times, it’s too late.”

Also Read : Alcohol can be linked with seven types of Cancer

This test detects DNA which is specifically formed due to cancer. sites.bu.edu
This test detects DNA which is specifically formed due to cancer. sites.bu.edu

The test was most successful with ovarian cancer, followed by liver, stomach, pancreatic, esophageal, colorectal, lung and breast cancers.

“This study that’s just published, it’s the first step,” Papadopoulos said.

He said a larger study is under way, with a pool of thousands of people. Unlike the earlier study, which dealt solely with patients already known to have cancer, the new group makes up a more representative sample of the general population — that is, most do not have cancer, at least not that has been diagnosed.

“The new study is different in that it simulates what is going to be the population that this test will be applied to,” he said. “And hopefully, we will get good results.” VOA

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