chitin molecules with chitin letters on the dice

chitin long-chain polymer n-acetylglucosamine molecules polysaccharides family rendering lettrs dice letters chitin molecule structure chitosan nanofibrils chain n-acetylglucosamine red biopolymer nanomaterials acetylglucosamine shrimp polysaccharide polymer isolated molecular nanoparticles long compound 3d molecular biochemistry synthesis background supplement shell nanotechnology component crustacean natural glucosamine organic medicine drug food rendering substance sea seafood chemical shellfish research science chemistry