_:vb50948595 . _:vb50948595 . _:vb50948595 "url:http://en.wikipedia.org/wiki/Mucopolysaccharidosis"^^ . _:vb50948595 . _:vb50948595 . _:vb50948595 "url:http://www2.merriam-webster.com/cgi-bin/mwmednlm?book=Medical&va=Mucopolysaccharidosis"^^ . _:vb50948595 . _:vb50948595 "A lysosomal storage disease that involves the accumulation of glycosaminoglycans in the tissues and their excretion in the urine."^^ . _:vb50948595 .