Word: cellã
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Harvard Medical School Professor of Genetics Jack W. Szostak and colleagues Elizabeth H. Blackburn and Carol W. Greider will be awarded the 2009 Nobel Prize in Medicine in December for their research illuminating the cell??s solution to protect its DNA, the prize committee announced yesterday...
...have extensive training and specialized facilities that are only available at elite hospitals. The findings, published in the journal Nature Materials last month, seek to combat those tumors that fool the immune system’s normal process of identifying dangerous substances. Normally, a particular type of immune cell??called a dendritic cell??will search the body for foreign matter, targeting it for destruction by T cells, another component of the immune system. But some tumors manage to escape detection, enabling them to grow uncontrollably, said Nathaniel D. Huebsch, one of the study?...
...agenda unifying Hassan Nasrallah, the Shiite leader of Lebanese Hezbollah, Mahmoud Ahmadinejad, the Shiite Iranian President, and Ismail Heniyeh, the Sunni leader of Hamas and the de facto Prime Minister of the Gaza Strip, is simple: Eliminate the “cancerous cell??—the State of Israel—from the Middle East. Ahmadinejad and Nasrallah have reiterated this message out loud; Heniyeh’s Hamas Constitution explicitly calls for this objective. The goal is evident. As for the means, anything is legitimate...
...because of its personalized yet scholarly contextualization of the seemingly unprecedented terrorist activity that has defined contemporary American politics.The vocabulary of terrorism entered the American lexicon overnight, but while “fatwa,” “dirty bomb,” and “sleeper cell?? appear regularly in public discussion, there is still little more than a superficial familiarity with terrorism. Richardson argues that it is impossible to effectively combat terrorism without awareness of the roots and goals of terrorist groups.The first half of “What Terrorists Want” lays...
...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...