Sirna Therapeutics said this week that Nassim Usman, senior vice president and COO, is leaving the company to pursue other interests.

Sirna also announced that Barry Polisky, vice president of research, has also been named CSO.

Polisky joined Sirna in 2002 from NeXstar Pharmaceuticals, where he was vice president of research.


Fisher Scientific said this week that Mark Roellig has joined the company as vice president, general counsel, and secretary.

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The Jackson Laboratory has filed a complaint accusing Nanjing University of breeding and re-selling its mouse models, the Hartford Courant reports.

Oxford researchers are turning to virtual reality to visualize genes and regulatory elements, Phys.org says.

In Science this week: neutrophils rely on microRNA to protect against lung inflammation, and more.

China is moving forward with plans to sequence a million citizens, the Wall Street Journal reports.