Abstract
Analytical experiments on the components of the cartilage extract in Rumalon are reported. The extract was separated by different methods in a low and a high molecular fraction. The low molecular fraction contains free amino acids and nucleo derivatives. The high molecular fraction is uniform on electrophoresis and can be considered as a mucopolysaccharide-peptide complex with an average molecular weight of 55,000. The peptide part seems to be of collagen type.

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