Salmonella Invades a Cultured Human Cell (NASA, International Space Station, 7/28/11) by NASA’s Marshall Space Flight Center on Flickr.

Via Flickr:
Editor’s note: this great image isn’t from NASA, so please see the credit below. It was used on a Web feature about a current experiment aboard the International Space Station, which is assisting with research and development of next-generation vaccines to protect against diseases caused by pathogenic microbes. Now how cool is THAT?

More information is located here: www.nasa.gov/mission_pages/station/research/news/RASV.html)

Caption: An example of Salmonella invading cultured human cells.

Image courtesy of Rocky Mountain Laboratories, NIAID, NIH.

Their Web site: