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John Petrovich, Mark Davis, John Rossi, and Matt Vincent

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John Petrovich will be the CEO of Calando Pharmaceuticals, a new subsidiary of Arrowhead Research that will focus on commercializing therapeutic RNAi delivery technologies.

Other co-founders of Calando include Mark Davis, a professor of chemical engineering at the California Institute of Technology; John Rossi, a molecular geneticist at the City of Hope’s Beckman Research Institute; and Matt Vincent, a partner at the law firm Ropes & Gray.

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.