Word: nuclei
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...move the study of disease from patients to Petri dish," said Douglas Melton, co-director of the Harvard Stem Cell Institute, whose own son was diagnosed with juvenile diabetes, guiding his decision to focus his experiments on that disease first. He will take the donated eggs, remove their nuclei and replace them with skin cells taken from diabetic patients at Columbia University. The resulting embryo will generate stem cells that Melton's group will extract and hopefully coax into becoming pancreatic islet cells. These could then be injected into the patient to generate the insulin that they lack. If Melton...
...Sarah Hayes, Dartmouth’s Angie Soriaga and Jeannie Cullen, and Princeton’s Becky Brown and Katy O’Brien all graduate this spring. Penn loses senior forward Jennifer Fleischer.Harvard is young and learning just as other teams are losing their cores, experienced nuclei that put them in contention for the title this season. The Crimson will return three of its top four scorers next year, with Hallion and freshmen Rollins and Tay all primed for breakout seasons. Reserves Niki Finelli and Emma Moretzsohn, as well as Liz Tindal, who sat all year with a torn...
...multiple waves of migration along a variety of different routes? One way scientists have tried to get a handle on that question is through genetics. Their studies have focused on two different types of evidence extracted from the cells of modern Native Americans: mitochondrial DNA, which resides outside the nuclei of cells and is passed down only through the mother; and the Y chromosome, which is passed down only from father to son. Since DNA changes subtly over the generations, it serves as a sort of molecular clock, and by measuring differences between populations, you can gauge when they were...
...Among the projects on the block to pay for the $3 billion cut is the NuSTAR satellite, which would have used x-ray detection to find black holes, galactic nuclei and supernovae; the Terrestrial Planet Finder, which, as its name suggests, would hunt for Earth-like planets around other stars; and a welter of small craft known as the Explorers-discount ships designed mostly by university groups and launched in cooperation with NASA. Narrowly focused and cheap to fly, they have in the past paid big scientific dividends on very little investment...
...from the ear cell of a 3-year-old male Afghan named Tai, it shouldn't be tough to prove, even to those outside investigators. As long as they have tissue samples from both the clone and the parent, they should be able to determine whether DNA in the nuclei of both animals' cells is identical--the first hallmark of a true clone. Ian Wilmut, the Scottish scientist who created Dolly the sheep in 1996, had to provide such samples to prove to skeptics that he had created history's first mammalian clone...