None whatsoever. The biological specimens are sealed with multiple seals inside containers. And the viruses that are being flown present absolutely no hazard to the crew. |
The kind of things we're looking at, for example, are materials that provide radiation shielding that would be used on space missions, including manned ones to Mars. |
These are materials that are planned for use on future spacecraft. We're getting an opportunity now using the space station as a host to expose these experiments to the space environment and see how they survive and how they perform. |