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Dna

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NEWS
August 26, 2014
W AN AND Wei-Heng Shih, both 60, of Bryn Mawr, are co-founders of Lenima Field Diagnostics. Both are professors at Drexel and are developing piezoelectric-sensor technology that can detect a germ that causes diarrhea and is primarily responsible for 14,000 deaths in the U.S. each year, says the CDC. I spoke with Wan Shih. Q: How did you come up with the idea for this technology? A: We have a long history on working with piezoelectric materials that started in the 1990s.
NEWS
April 25, 2002 | By Faye Flam INQUIRER STAFF WRITER
The coiled molecules of DNA in human cells carry a unique chemical code that can match a trace of blood, semen, skin or hair to the person who left it. DNA (deoxyribonucleic acid) carries its code in four characters denoted by the letters A,T, C, and G. But no microscope is powerful enough to see how this code is arranged on a given DNA molecule, so science must use more indirect methods to read it. Forensics laboratories use several different methods for determining whether two samples indeed carry identical stretches of code.
LIVING
July 3, 2000 | By Faye Flam, INQUIRER STAFF WRITER
They seemed unlikely candidates to make one of the pivotal discoveries of the 20th century. Francis H.C. Crick was a 35-year-old Ph.D. candidate who had abandoned physics, hoping to find his niche in biology. James D. Watson was a gawky-looking 24-year-old who rarely bothered to tie his shoelaces. Both scientists were supposed to be working on other things, but they believed fervently that the most important scientific problem of their time was the mystery of inheritance - how everything from diseases to hair color to the very instructions to make a human being was passed on from generation to generation.
NEWS
June 3, 2004 | By Thomas J. Gibbons Jr. INQUIRER STAFF WRITER
A man arrested recently in Puerto Rico for domestic offenses resembles the composite of the Fairmount Park rapist, city police said yesterday, adding that the suspect has lived in Philadelphia. As a result, the man, whose name was not released, has agreed to provide DNA that will be compared with evidence collected in the murder and rape of medical student Rebecca Park in Fairmount Park and the rape of another woman off Kelly Drive. The Fairmount Park assailant is also suspected of a third attack on the West River Drive in which the victim managed to fight off her attacker.
NEWS
October 12, 2006 | By Pam Lobley
Do you have the feeling you're related to someone famous? Maybe it's an uncanny sense that Mozart was your ancestor. Or that Genghis Khan might be in your family tree. That affinity you feel for ancient Rome can't be an accident, can it? Touring the toppled ruins of columns and friezes in the ancient city stirs something in you. Perhaps one or your ancestors was one of those emperors, or perhaps just a Roman soldier. It's in your blood. Now, with a simple swab of your cheek and a few hundred dollars, you can find out. Commercial genetic genealogy is barely five years old, but already it is proving irresistible to many.
NEWS
June 16, 2013 | By Evi Heilbrunn, For The Inquirer
In a narrow ruling June 3, the U.S. Supreme Court declared that the DNA swabbing of people arrested in connection with serious crimes is legal. The Maryland attorney general praised DNA swabbing as the 21st-century equivalent of fingerprinting and said it would help solve crimes. No doubt. But the ruling represents yet another way our DNA is slipping beyond our control even as few standards exist for its use, storage, and destruction. The implications are laid out in Biotechnology in Our Lives , the latest book from the Council for Responsible Genetics, a Cambridge, Mass., nonprofit focused on the ethics of gene research and biotechnology.
NEWS
November 4, 2011 | BY MORGAN ZALOT, zalotm@phillynews.com 215-854-5928
POLICE yesterday announced the arrest of a man who allegedly raped a 40-year-old woman outside the Linc during an Oct. 5, 2008, Eagles-Redskins game. "It was obviously a real challenge for us because of the number of people in and around that stadium," Special Victims Unit Capt. John Darby said yesterday. "It's almost like finding a needle in a haystack. " Police said they arrested Tiaghgee Daughtry, 22, who lives in Tunkhannock, Pa., near Scranton, on Wednesday, for allegedly raping the woman on a bus during the game.
NEWS
December 26, 1996 | By Michael E. Ruane, INQUIRER WASHINGTON BUREAU
No one really knows what happened to Phil Purcell's plane that day in September 1963 over Kontum, Vietnam. A relief pilot saw him turn his ancient B-26 back toward Da Nang. But he never arrived - plunging, instead, into the highlands below and vanishing beneath the oncoming tide of history. For three decades, as his bones and those of his crewmates moldered in Vietnam, as his children grew up and his wife remarried, the story of who he was lay locked in his body's DNA, like a song waiting to be heard.
NEWS
June 4, 2000 | By Pearl Duncan
Why do visions of war and hacked, stub-limbed civilians from Africa fail to move us as much as the images of civilians under attack in other parts of the world? I contend that we - whites, blacks and blends - are less moved by images from Africa because we've lost the emotional connection with the branch of the African human family tree. Geneticists recently have published results that say we all share the same DNA with slight variations based on traumas and the places we've passed through, via our ancestors.
NEWS
November 4, 1998 | by Nicole Weisensee, Daily News Staff Writer
For 41 years, the boy in the box has rested in his pauper's grave - unidentified, his murder unsolved. Yesterday, in a final attempt to find his killer, police removed him from his solitary grave in a potter's field in Northeast Philadelphia. They took his body to the medical examiner's office, where technicians will try to extract DNA from his remains. They hope such evidence will help identify him and eventually help nail his killer. "It's hard but it's been done before," said Lt. Ken Coluzzi, head of the special investigations unit at the police Homicide Division.
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ARTICLES BY DATE
NEWS
August 26, 2014
W AN AND Wei-Heng Shih, both 60, of Bryn Mawr, are co-founders of Lenima Field Diagnostics. Both are professors at Drexel and are developing piezoelectric-sensor technology that can detect a germ that causes diarrhea and is primarily responsible for 14,000 deaths in the U.S. each year, says the CDC. I spoke with Wan Shih. Q: How did you come up with the idea for this technology? A: We have a long history on working with piezoelectric materials that started in the 1990s.
NEWS
August 17, 2014 | BY MENSAH M. DEAN, Daily News Staff Writer deanm@phillynews.com, 215-568-8278
CALVIN GADSON, a Germantown man who robbed a teenage couple and raped the girl in 1998 but was not arrested until 2010 when DNA evidence linked him to the crimes, fought back tears yesterday after being sentenced to 32 1/2 to 65 years in state prison. "I'm not perfect," Gadson, 38, said before learning his fate from Common Pleas Judge Giovanni O. Campbell. "I just ask for a little bit of leniency so I can see my five children grow up. " But Gadson's children - who are ages 6 to 17 - will be long grown by the time he is eligible for parole.
NEWS
July 7, 2014 | By Joseph A. Slobodzian, Inquirer Staff Writer
It's become the last, best hope of people charged with a crime: a DNA test that proves police have the wrong guy. Tell that to Antwon Watkins. The 16-year-old South Philadelphia High School junior was found guilty of simple assault by a Philadelphia Family Court judge April 28 despite negative DNA results, alibi witnesses, school attendance records, and having no prior arrests. It could have been worse. Watkins had been charged with aggravated assault on a police officer.
NEWS
June 27, 2014 | By Lydia O'Neal, Inquirer Staff Writer
A man whose DNA led him to be charged in two cold-case murders from 1989 was held Wednesday for a Philadelphia Common Pleas Court trial. Police arrested Rudolph Churchill, 52, on March 19 for the murders of Ruby Ellis and Cheryl Hanible, whose bodies were found five weeks apart in North Philadelphia. Detectives, using decades-old DNA collected from both crime scenes, charged Churchill, who was living in Paulsboro. He had a three-year prison stint in DeKalb County, Ga., for burglary.
NEWS
June 9, 2014 | By Robert Moran, Inquirer Staff Writer
Two Philadelphia girls who went missing in 1968 have been identified through DNA as murder victims who were buried in Berks County, State Police said Friday. Sandra Ann Stiver, 14, and Martha Evelyn Stiver, 17, who were sisters-in-law, were last seen around summer of that year in the area of Kensington and Frankford Avenues. In August 1968 and April 1969, the bodies of two unidentified girls were found in southern Berks County, police said. The body of Sandra Stiver was found first.
NEWS
May 19, 2014 | By Meeri N. Kim, For The Inquirer
Imagine a document 25,000 words long - about 100 pages, double-spaced - with one small error. Within the text of our genetic code, a single change like this can lead to a life-threatening disease such as sickle-cell anemia or cystic fibrosis. Most of these single-gene disorders have no cure. But using a new technique, doctors may one day be able to correct the genetic typo by replacing a harmful mutation in the genome with healthy DNA. Introducing CRISPR (clustered regularly interspaced short palindromic repeats)
NEWS
May 11, 2014 | By Marie McCullough, Inquirer Staff Writer
First in a series of monthly stories on the latest in cancer research and treatment. Last month, the Food and Drug Administration approved a DNA test as an alternative, not just an add-on, to the venerable Pap smear for cervical cancer screening. The cobas test, made by Roche, detects the DNA of certain types of human papillomavirus (HPV), which causes the disease. Based on a study of more than 47,000 women, using cobas as a primary screening test in women 25 and older could improve detection while reducing invasive diagnostic procedures.
NEWS
April 29, 2014 | By Allison Steele, Inquirer Staff Writer
At times, Grace Bowen has caught herself forgetting her sister is gone. At 30, Bowen is older than her sister, Joy Hayward, was when someone strangled her a decade ago in a Chester hotel room. Police found DNA and other leads. But the case went cold. "Whoever it was, they must have stopped leaving DNA, or they died," Bowen said recently from Annapolis, Md. "In the end, I think she was in the wrong place at the wrong time. I think there was no motive, no reason. " Across the region and the country, unsolved murders are increasingly common.
NEWS
April 18, 2014 | BY MENSAH M. DEAN, Daily News Staff Writer deanm@phillynews.com, 215-568-8278
SOMETIMES criminals evade detection by police and the media, even when they commit a series of savage assaults. That was the case with Matthew Jones, 30, who pleaded guilty in July to raping and battering four women in Frankford between May 2007 and his arrest in August 2012. Yesterday, Common Pleas Judge Donna Woelpper sentenced Jones to 35 to 100 years in state prison, noting the violence he had inflicted on his victims and calling him a danger to society and a poor candidate for rehabilitation.
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