Word: relatedness
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This week the largest financial firms in the nation have been reporting how they did in the last three months of 2009. In two words: not good. Citigroup and Bank of America lost roughly $8 billion and $5 billion, respectively. The credit-card and mortgage businesses of JPMorgan Chase, which...
Focusing on a single, well-defined sample group that, in the case of the migraine study, was descended from 22 related couples, helped clarify what proportion of risk was attributable to heredity rather than environment. "What's fabulous about this study is that they were able to isolate a population...
At first blush, those odds might seem to cast doubt on a genetic link. After all, previous studies have shown that among unrelated folks, those with migraines are four times as likely to get depression as those without migraines, while this new Dutch study shows that closely related people aren...
Identifying the genetic link required even more detailed detective work. Rather than compare the rates of depression and migraine of the relatives to those of the general population, the study compared rates within this isolated population itself. For each of the 977 people studied, they calculated how much DNA that...
By that time, back in Canada, a toxicologist at Alberta Hospital had noticed an unusual chemical in the urine of the two cocaine-using patients: levamisole. Zhu contacted him, and they put the puzzle together. Further research revealed that levamisole, a drug that was once used to treat colon cancer...