Word: methods
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Dates: during 2000-2009
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Pardon us for raining on this parade of jubilation. A “milestone” the research of groups in Japan and Wisconsin may be, but their method does not yet negate the need for controversial research on embryonic stem cells. Scientists and supporters of stem cell research should not allow conservatives to declare victory and should persevere in their fight to eliminate restrictions on embryonic stem cell research...
...method the researchers in Japan and Wisconsin used to arrive at stem cells involves transferring four genes into the genome of a mature cell through virus. These four genes produce factors that “reprogram” the mature cell’s genome to a stem-like state. No viable embryo, therefore, is either created or destroyed—which is the main qualm of conservative opponents of the research...
...previous reports, UNAIDS had estimated national rates by extrapolating data collected at public health clinics, where young women who thought they might be pregnant or infected with a sexually transmitted disease were given anonymous blood tests. But that method gave extra statistical weight to groups with higher HIV rates, such as prostitutes and drug abusers, and virtually disregarded rural women...
...Stem cells generated by this method are ideal not just because they are free of political and moral baggage. They can also be coaxed into becoming any type of tissue, and then be transplanted back into the donor with little risk of rejection. Still, these cells are far from ready for medical use. The viruses used to ferry the genes that manipulate the cells can introduce genetic mutations and cancer. And with myriad ways to reprogram a cell, sorting out the best ones will take time - meaning that stem cells from embryos will remain useful (and controversial) for a while...
...table, Mrs. Yuki directed the feast as three waitresses served course after course with chilled sake specially brewed for the house. Like a symphony, kaiseki tempo alternates between big movements and adagio interludes. The meal follows a single seasonal theme, but each course features a different cooking method. The overture was mushiawabi--steamed abalone--a luxurious opening. A subdued salad of zuiki, or taro stems, seemed to say that opulence must avoid ostentation. The clear soup arrived, an important kaiseki moment. When we lifted the lacquer lids, an aromatic tsunami swept us away. Matsutake mushrooms! Pairing the first fall mushrooms...