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'Not Necessarily Benign'

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Prostate cancer screenings for healthy men have always been a little controversial as it's still not clear if catching the disease early is worth the risks the screen presents, says Katherine Hobson at the Wall Street Journal's Health blog. A recent report from Bloomberg News probably won't help — according to the report, needle biopsies that follow an abnormally high PSA count from a screening are resulting more and more in severe E. coli infections. Bloomberg News goes on to say that the risk of post-biopsy infection has more than doubled in less than 10 years, with some men developing sepsis. These findings show that the screening and the tests that follow are "not necessarily benign," Hobson says, and that physicians are starting to more carefully consider the risks before ordering the test.

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.