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New Genes for Bipolar Disorder

Researchers have used a gene chip to identify SNPs associated with bipolar disorder in American, British, and Irish patients. They identified two genes, both involved in ion channels. Nick Craddock, who led the Nature Genetics study, told the New York Times that the genes are probably only involved in a few bipolar cases and with modest effect. He adds, however, that identifying involved genes will help elucidate the pathways involved in bipolar disorder.

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.