NEW YORK (GenomeWeb News) â€" In a pair of papers appearing online today in the Lancet and Lancet Oncology, members of the Breast Cancer Intergroup of North America reported that some post-menopausal, estrogen receptor positive breast cancer patients benefit from the addition of chemotherapy to standard tamoxifen treatment.

And, the researchers found, the addition of chemotherapy was most beneficial for individuals scoring high on Genomic Health's Oncotype DX test, suggesting the recurrence assay may be helpful for guiding such treatment.

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In PNAS this week: ancestry and admixture in Brazilians, characterization of novel double-stranded RNA mycovirus, and more.

Researchers report that what scents someone picks up can reflect their complement of immune genes.

The New York Times examines ethics and China's push to lead biomedical research.

At her blog, Sally Rockey dives into National Institutes of Health funding data.