One form of E.coli is pathogenic - nasty stuff! - and I would imagine you would need the assistance of a university or medical researcher to obtain it from a biological supply house such as Carolina Biological. To properly manipulate bacteria, you need aspetic techiques and specific tools. The bacteria also requires a specific media to grow in, and incubaters at 37 degrees. You might check with a biologist at your local community college, or a public health lab.

Michael Bentley, EdD, Expert Panelist