Here is a section of an interesting post that 2manyfibers has made here about the fibers and polysaccarides:
GM crops, organophosphates and Morgellons: is there a connection?
"Dr. Citovsky has also identified the fibers from Morgellons patients as consisting of polysaccharides (which are long chains of “sugars”) as noted in the link and excerpt below:
New skin disorder drawing attention -- -- Newsday.com
"Many [pyhsicians] consider it a psychiatric problem," Citovsky said. "However, there might be something that they develop," he added, underscoring that his laboratory analyses have cracked the chemical puzzle of the fibers.
"They're made up of polysaccharides, sugars," he said. "
A discussion on wikipedia which identifies the types of polysaccharides, of which cellulose is just one type, a structural polysaccharide:
Polysaccharide - Wikipedia, the free encyclopedia
There are others including acidic polysaccharides such as carboxyl groups and sulfuric esters and bacterial capsule polysaccharides such as bacteria, fungi and algae which may even be a structural component of biofilms. Yet another type of polysaccharide is storage polysaccharides, such as starch and glycogens.
Therefore the word polysaccharides would probably need a more exact definition and more research may be needed in order to find what exactly is meant by the term polysaccharide as it is applied to a morgellons fiber. It is easy to see why some experts might see this as a bacterial or fungal problem as these contain polysaccharides too.