Polysaccharide of moving animals. Cellulose and chitin are examples of structural polysaccharides. Cellulose is used in the cell walls of plants and other organisms, and is said to be the most abundant organic molecule on Earth. It has many uses such as a significant role in the paper and textile industries, and is used as a feedstock for the production of rayon (via the viscose process), cellulose acetate, celluloid, and nitrocellulose. Chitin has a similar structure, but has nitrogen-containing side branches, increasing its strength. It is found in arthropod exoskeletons and in the cell walls of some fungi. It also has
Insect cell culture Insect cell culture The use of insect cell lines as production hosts is an emerging technology for the production of bio pharmaceuticals. There are currently more than 100 insect cell lines available for recombinant protein production with lines derived from "Bombyx mori", "Mamestra brassicae", "Spodoptera frugiperda", "Trichoplusia ni", and "Drosophila melanogaster" being of particular interest. Insects cell lines are commonly used in place of prokaryotic ones because post-translational modifications of proteins are possible in insect cells whereas this mechanism is not present in prokaryotic systems. The Sf9 cell line is one of the most commonly used lines in insect cell