[Histochemical study of the matrix of calcium-containing urinary calculi by means of topo-optical reactions].

The authors investigated the matrix of calcium-containing urinary calculi of different basic type by means of histochemical and topo-optic methods. They found the glycoprotein reactions of the calcium oxalate calculi by far weaker than in the calcium phosphate and in the much infected struvite-containing calculi. The acid mucopolysaccharides were to be proved particularly in the infected mixed calculi. Collagen could not be found in the calculi.