Promise and Limits

Patient-derived xenograft mice are supposed to recapitulate patients' tumors so researchers can better model tumors or even so clinicians use them to choose a treatment approach. But as Nature News reports, these models have some limitations.

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In Science this week: International Wheat Genome Sequencing Consortium publishes the bread wheat cultivar Chinese Spring reference genome, and more.

At his FDA Law Blog, Jeffrey Gibbs discusses FDA's technical assistance for the draft Diagnostic Accuracy and Innovation Act.

The New York Times reports that genetic testing has uncovered unfaithful penguins at a Utah aquarium.

Cancer researcher loses funding under new Wellcome Trust anti-bullying policies, the Guardian reports.