- Inseparable iduronic acid-containing proteoglycan PG(IdoA) preparations of human skin and post-burn scar tissues: evidence for elevated levels of PG(IdoA)-I in hypertrophic scar by N-terminal sequencing. Garg, H.G., Siebert, J.W., Garg, A., Neame, P.J. Carbohydr. Res. (1996)