The full - galaxy simulation will likely be composed of hundreds of billions of cells representing more than 30,000 light years of space. (sciencedaily.com)
Our brain contains billions of cells, each of which need to communicate between each other in order to function properly. (sciencedaily.com)
About two weeks later, I had around 50 billion of these cells infused into me to fight the cancer. (cancerresearch.org)