#$%^&*AU2013202662B220150903.pdf#####ABSTRACT A poly-p-1--4-N-acetylglucosamine composition comprising biocompatible poly-1--4-N-acetylglucosamine fibers, wherein (i) the majority of the fibers are less than about 15 5 pm in length, and (ii) the composition (a) increases metabolic rate of serum-starved human umbilical cord vein endothelial cells in a MTT assay and/or does not rescue apoptosis of serum-starved human umbilical cord vein endothelial cells in a trypan blue exclusion test, and (b) is non-reactive when tested in an intramuscular implantation test. <；filename>；
