Shark-Wise is a 100% pure freeze/vacuum dried shark cartilage preparation from New Zealand and is guaranteed for quality and purity. Shark Cartilage is composed primarily of protein, calcium, collagen, and glycosaminoglycans, which support immune, joint, and connective tissue function. The increased demand for a high quality shark cartilage preparation began our investigation into the production and protocol assay for a 100% pure shark cartilage preparation, which resulted in the development of the chicken Chorioallantoic Membrane (CAM) Assay. The CAM Assay measures the level of activity of the important Macro-Protein in shark cartilage that is responsible for it s astounding effects. The CAM Assay is the only way to insure the presence and activity of the important macro-protein. FoodScience of Vermont consistently scores high on their CAM Assays. Assays are available on request.