Word: celles
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Growing large batches of live virus, however, is a tricky business, and some scientists are turning to genetic engineering to improve the output. Tweak some genes, and you can make a virus that grows more easily in cell cultures. Tweak others, and the virus becomes a better target for the body's immune system...
...upgrade will make even the annual flu vaccines more effective and will prepare us better for when the next pandemic threat looms. CURRENT METHOD: EGG CULTURE Virus is purified and chemically killed to produce the vaccine Virus --> Virus is grown in fertilized chicken eggs --> Vaccine NEW METHOD: HUMAN-CELL CULTURE Virus is killed and processed to produce the vaccine Virus --> Cell --> Virus is grown in human-cell culture --> Vaccine GENETIC METHOD: DNA VACCINES Plasmid is manufactured, purified and painted onto gold particles Virus --> Viral RNA --> Microscopic gold particles --> Gene gun shoots particles into the skin
...YOUR PREVIOUS OLYMPICS, IN 2002, PRESIDENT GEORGE W. BUSH SAT NEXT TO YOU DURING THE OPENING CEREMONIES. WAS THAT A TOTAL SURPRISE? I knew he was going to be sitting there because the Secret Service was planning a space for him. So I called my mom on my cell phone, and she didn't believe me. So when he was sitting next to me, I thought I'd better call her back. I asked him to say hi to my mom to prove he was there, and he was really great and nice and talked to her for a couple...
...escalating series of charges: first, that some women had been paid for the eggs they provided for his research, and that eggs also came from his employees, both ethical violations in the rigorous world of high-level research. Then came the allegation that some of the photos of cells he published did not show what he claimed. And finally, as he was forced to admit two weeks ago, before submitting his resignation to Seoul National University (S.N.U.), that nine of the 11 stem-cell lines he described in Science weren't from clones at all. Last week, in a kind...
...university is investigating the Snuppy report, along with Hwang's original 2004 stem-cell paper in Science. Hwang maintains that the current imbroglio involved no fraud on his part. He claims that a mix-up with the stem cells resulted in the wrong stem-cell lines--ones he did not create--being published in Science. Despite his failure so far to prove it, he still insists that he has developed the technology to create human stem cells that could be used to grow resistance-free replacements for damaged nerve, organ and muscle tissue. Despite black, billowing smoke, says Hwang, there...