Smithsonian magazine's 22nd Annual Photo Contest | Made possible through the support of MPB.com

10th Annual Smithsonian Magazine Photo Contest Natural World
The big squeeze - a red blood cell travels through a small blood vessel in the heart

The big squeeze - a red blood cell travels through a small blood vessel in the heart

Photo Detail
Date Taken: 10.2012
Date Uploaded: 11.2012
Photo Location:
Copyright: © James Cassuto