Insulin
By Anne Marie Helmenstine, Ph.D., About.com Guide
These are crystals of insulin.
NASAGrow Your Own Crystals
©2009 About.com, a part of The New York Times Company.
All rights reserved.
By Anne Marie Helmenstine, Ph.D., About.com Guide
These are crystals of insulin.
NASA©2009 About.com, a part of The New York Times Company.
All rights reserved.