For ten points, these bacteria are negative on what microbiological test which was not named for a unit of measurement.
The cell wall of E. coli is low in peptidoglycan content and high in lipids. Like other bacteria, such as Y. pestis, when E. coli are heat-fixed, treated with a crystal-violet stain, and flushed with iodine and then alcohol, they will not remain purple. For ten points, these bacteria are negative on what microbiological test which was not named for a unit of measurement.
The cell wall of E. coli is low in peptidoglycan content and high in lipids.
gram stain (accept gram-negative)