27 mar 2009 ano - Stem Cells - Barack Obama
Descrição:
Obama overturns a ban on embryonic stem cell research, which was enacted by the Bush administration. This allowed for greater research into the use of stem cells in various scientific fields.
Source: http://www.cnn.com/2009/POLITICS/03/09/obama.stem.cells/
Adicionado na linha do tempo:
bio30
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