• Plant Bar Code Soon to Become Reality

    A paper published this week in the Proceedings of the National Academy of Sciences proposes two genetic sequences, or loci, taken from chloroplast genes called matK and rbcL, as the official plant "bar code," a short piece of DNA that can be used to distinguish species.

  • From Science's Online Daily News Site

    Highlights from Science's online daily news site, ScienceNOW, this week include exploding raindrops, no risk in disclosing genetic risks, an ancient climate-change puzzle, and elephants that don't always keep it in the family.

  • Knockout Rats via Embryo Microinjection of Zinc-Finger Nucleases

    Targeted gene disruption in rats paves the way for new human disease models.

  • Targeted Retrieval and Analysis of Five Neandertal mtDNA Genomes

    Targeted sequencing improves Neandertal mitochondrial DNA retrieval and reveals low diversity among individuals.

  • Sequencing Neandertal Mitochondrial Genomes by the Half-Dozen

    On page 318 of this week's issue of Science, researchers describe a new technique to decipher the entire mitochondrial genomes from five Neandertals. These genomes show relatively little genetic diversity among Neandertals scattered across Europe and Russia.

  • Researchers Generally Happy With Final Stem Cell Rules

    The final guidelines on research with human embryonic stem cells issued on Monday by the National Institutes of Health set out criteria for determining which ES cell lines can be used in federally funded experiments and give NIH discretion to approve old lines that don't meet stringent modern ethical requirements.

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