Inconclusive evidence for nonterrestrial isoleucine enantiomeric excesses in primitive meteorites

@article{Elsila2012InconclusiveEF,
  title={Inconclusive evidence for nonterrestrial isoleucine enantiomeric excesses in primitive meteorites},
  author={J. Elsila and D. Glavin and J. Dworkin and Z. Martins and J. Bada},
  journal={Proceedings of the National Academy of Sciences},
  year={2012},
  volume={109},
  pages={E3288 - E3288}
}
Pizzarello et al. (1) recently described the soluble organic content of eight Antarctic Renazzo-type (CR) carbonaceous chondrites and reported large enantiomeric excesses (ee) of l-isoleucine and d-alloisoleucine. The reported values of ee decrease with inferred increases in aqueous alteration. We believe the conclusions presented in the paper are not fully justified and the data are potentially flawed. 
Amino acid analyses of R and CK chondrites
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