Word: betas
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...It’s important for students to understand that art objects are very dense objects, just as dense as a novel or scientific treatise,” says Roberts. “These are real historical documents that are filled with information.” A Phi Beta Kappa graduate of Stanford, Roberts did not even discover her interest in art history until senior year. “I started out in human biology, which I did for two years, then I switched to English, and ended up my senior year double majoring in English and Art History...
...High School for Science and Technology in Fairfax County, Va.—among the best secondary schools in the nation—ready to study mathematics. He ambitiously prepares a plan of study that allows him to earn an honors degree, a foreign language citation, and a Phi Beta Kappa key, all before his 22nd birthday...
That's a milestone in diabetes treatment. Type I diabetes patients are locked in a constant struggle to maintain their body's insulin levels. Since their beta cells no longer produce the hormone on their own, patients must supply it themselves with multiple injections throughout the day and night, or using an insulin pump that dispenses insulin automatically through a permanent tube under the skin. Voltarelli's stem cell strategy provides a life-changing alternative that would take the burden off the patient and put it back where it belongs, on the beta cells...
...which a portion of the body's tissues - the immune system - is destroyed with dangerous radiation. Then, there is the question of timing. In most cases, patients with type 1 diabetes do not show symptoms of their disease - such as high blood sugar levels - until they have depleted their beta cell population considerably. Dr. David Nathan, director of the diabetes center at Massachusetts General Hospital, notes that at this point, there may not be enough beta cells remaining to seed a new population of insulin-growing cells, even with an infusion of stem cells to give them a more hospitable...
Voltarelli's team, however, has managed to show that the stem cells can give long-lasting beta cells a chance to grow - at least ones that can produce insulin for about three years. Other researchers are pursuing intriguing new stem cell options, including stem cells that can be grown from a patient's own skin, which would eliminate the need for extracting immune stem cells from bone marrow. "Every door that we open leads to another door," says Burt. "All research is built by sitting on the shoulders of other studies. This trial is something that will contribute...