When Robert Lanza?s group at Advanced Cell Technology reported linkurl:this week;http://www.the-scientist.com/news/display/24363/ creating so-called ethically clean ES cell lines (establishing colonies from an early human embryo without destroying it) they didn?t make clear whether they had actually accomplished this feat. This work might have potential, but the numbers speak to a logical smoke and mirror show. Using 16 blastomeres (embryos in the 8-to-10-cell stage), Lanza?s group extracted 91 cells to create a total of 2 cell lines. 91 cells taken from 16 embryos means its quite likely that none of these embryos could have survived, and if they did, the chances that one of the two lines derived are actually from the survivor is next to impossible. That means while Lanza can say, ethical problem solved, he hasn?t actually derived a cell line without destroying an embryo. That should have been the second line to linkurl:every story;http://ksjtracker.mit.edu/?p=1127 covering this paper linkurl:including...

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