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Methylation Might Bring You Down

Canadian scientists have studied how methylation patterns can affect suicidal behavior. Researchers at the University of Western Ontario, Carleton University, and the University of Ottawa looked at brain tissue from 20 people, 10 of whom had committed suicide, and found that the rate of methylation in the suicide brain tissue was almost 10 times that of the normal group. The research, published in Biological Psychiatry, suggests an epigenetic mechanism that could influence the "recurrent nature of major depressive disorder," they say in this BBC news story.

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.