Abstract
Histochemical analysis of urea-unmasked glycosaminoglycans has been performed in connective tissues of the rat and mouse skin by means of combined staining and enzyme digestion procedures. The staining procedures used were Alcian Blue pH 1.0, Alcian Blue pH 2.5, Aldehyde Fuchsin, periodic acid-Schiff (PAS), Alcian Blue pH 2.5-PAS, high iron diamine and low iron diamine methods. The digestive enzymes employed were Streptomyces and testicular hyaluronidases, chondroitinases ABC and AC and keratanase. The results obtained indicated that the major components of the glycosaminoglycans in the connective tissues of the skin were hyaluronic acid, dermatan sulphate and chondroitin sulphate A and/or C, whereas the tissues were devoid of keratan sulphate.
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