This Week in Nature

In a study out of Michigan that seems to have overturned the cancer stem cell theory, researchers found that after introducing human melanoma cells into immunocompromised mice, many more than expected developed tumors. In the less immunocompromised mice, only one in 837,000 cells regenerated melanoma, while in the more vulnerable mice one in four cells did, says a related news story.

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York University researchers find genomic evidence of inbreeding in the yellow-banded bumblebee, according to Reuters.

In its survey of US adults, the Pew Research Center finds that views on the genetic engineering of animals depend on why it's done.

The Scientist reports agricultural researchers are working on a gene-stacking tool.

In Nature this week: statistical method for overcoming case-control imbalance issues, and more.