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Just When You Thought It Was Safe

Wired has an article warning scientists that proposed rules for government funding of embryonic stem cell research from the Obama administration could make "hundreds of existing cell lines ... ineligible, even those that qualified under President Bush." The story says the guidelines, which are in draft form now, were written by NIH and are expected to be finalized in July. "In their current state, [the rules] restrict funding to stem cell lines produced according to new rules that are only now being established. Few existing cell lines will meet those requirements," the story adds.

The Scan

Pig Organ Transplants Considered

The Wall Street Journal reports that the US Food and Drug Administration may soon allow clinical trials that involve transplanting pig organs into humans.

'Poo-Bank' Proposal

Harvard Medical School researchers suggest people should bank stool samples when they are young to transplant when they later develop age-related diseases.

Spurred to Develop Again

New Scientist reports that researchers may have uncovered why about 60 percent of in vitro fertilization embryos stop developing.

Science Papers Examine Breast Milk Cell Populations, Cerebral Cortex Cellular Diversity, Micronesia Population History

In Science this week: unique cell populations found within breast milk, 100 transcriptionally distinct cell populations uncovered in the cerebral cortex, and more.