Illustrations for a guide to growing beef in a lab

Steps 1-4 on our visual guide to growing beef in a lab, appearing in one of our latest features on The Verge, You meat addiction is destroying the planet (But we can fix it) http://www.theverge.com/2013/8/13/4605528/your-meat-addiction-is-destroying-the-planet-but-we-can-fix-it