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Is It Safe to Buy Test Subjects?

According to a recent study out of Johns Hopkins, clinical trials that pay participants attract mostly poor volunteers who join repeatedly, and may enroll in multiple trials at the same time. While there is no substitute yet for human trials, the long-term health effects of repeatedly volunteering remain murky, and it could also be risky for scientific clinical validation. Check out the Tech Review's blog post here.

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.