Category Archives: Transhuman News

DNA tests have confirmed a Bulgarian Roma couple as the biological parents of Maria, a mystery blond girl whose discovery in a Greek Roma camp last week made global headlines.

'DNA samples showed that Sasha Ruseva is the biological mother and Atanas Rusev is the biological father of the child called Maria,' Bulgaria's interior ministry chief of staff Svetlozar Lazarov told reporters.

The girl, aged somewhere between four and six, was found living with a Greek Roma couple in a camp near the town of Farsala.

DNA tests showed that the 39-year-old man and 40-year-old woman taking care of her were not her real parents.

The couple were accused of abducting the girl, amid an international effort to find here real parents that gave hopes to hundreds of missing children parents across the world.

The two denied the accusations, saying that the little girl was voluntarily handed over to them by her Bulgarian Roma mother who could not care for her.

Following reports in the Greek media pointing to the identity of the mother, Bulgarian police tracked down on Thursday a Bulgarian Roma couple from the central town of Nikolaevo, and questioned them on the Maria case.

The woman, Sasha Ruseva, 35, told police she had given birth to a baby girl while working in Greece several years ago and left it there when it was seven months old, the interior ministry said.

Ruseva has said she was not completely certain that Maria was her child but that she resembled some of her other nine children - also blond, fair-skinned and light-eyed.

The woman said she was ready to take Maria back if DNA tests confirmed that she was her real mother.

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DNA confirms Greece girl's parents

Saudades de Matão - Aniversário Dna Elizabeth
saudades de Matão - geburstag feir Elizabeth Henning in Pomerode singen germanische koraollle von Pomerode und spielen Reiner Modro Sérgio Ulrich Anderson Töwe.

By: Reiner Modro

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Saudades de Matão - Aniversário Dna Elizabeth - Video

PUBLIC RELEASE DATE:

28-Oct-2013

Contact: Kate McAlpine kmca@umich.edu 734-763-4386 University of Michigan

ANN ARBORStructures that put a spin on light reveal tiny amounts of DNA with 50 times better sensitivity than the best current methods, a collaboration between the University of Michigan and Jiangnan University in China has shown.

Highly sensitive detection of DNA can help with diagnosing patients, solving crimes and identifying the origins of biological contaminants such as a pathogen in a water supply.

"It really does not matter where the target DNA is from," said Nicholas Kotov, the Joseph B. and Florence V. Cejka Professor of Chemical Engineering at U-M. "In order to detect a specific DNA, we just need to know a small portion of its sequence."

Current DNA analysis methods rely on copying segments of a strand of DNA. The process unzips the double helix and then short, lab-made 'primer' DNA strands attach to each half of the original DNA. These primers kick-start the copying process, using the unzipped DNA as a template. Targeted segments of DNA can be replicated in this way, doubling every cycle. If enough DNA is produced before copying errors become a major problem, then further analysis can show whether the sample matches a suspect, for example.

But if the primers were very selective for the suspected DNA sequence, then a match could be determined by simply detecting whether the DNA had copied or not. Studies revealed that small amounts of DNA could be observed when spherical gold nanoparticles were attached to the primers. If the DNA matched suspicions, strings of particles bound together with DNA would form in the replication process. The nanoparticle solution would change color from red to blue, due to the way the strings of particles interact with light.

"Impressive detection limits were attained for short DNAs with nanoparticles; however, not for long DNA," Kotov said.

The problem, he explained, is that if the particles are further apart than a few nanometers, or millionths of a millimeter, "they do not interact strongly and the blue color does not happen." Longer strands are needed to differentiate between species and individuals with greater accuracy.

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Traces of DNA exposed by twisted light