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2004: The Year In Biology And Medicine 
10/19/2005 5:09:37 PM

Fears of a global flu pandemic, the inexorable spread of AIDS and the pervasiveness of tuberculosis were some of the threats which marked out 2004. But the year saw landmark advances too, with the cloning of the first human embryos, the birth of the first totally fatherless mammal and other significant steps forward in stem cell technology.
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