Gram positive 20-80nm: Gram negative 10nm Table - link nm
|The Microbial World, Section 2-25 The cell wall surrounds and holds in the microbe, link bottom of web page Figure 2-65
|Bottom paragraph:"The differences between the cell walls of gram-positive and gram-negative bacteria greatly influence the success of the microbes in their environments. The thick cell wall of gram-positive cells allows them to do better in dry conditions because it reduces water loss. The outer membrane and its LPS [lipopolysaccharides] helps gram-negative cells excel in the intestines and other host environments. Figure 2-65 summarizes the difference between gram-negative and gram-positive cell walls."