Human Articular Cartilage Digestion Medium I (Streptokinase) is a ready-to-use digestion working solution specifically designed for the efficient and high-activity isolation of primary human articular chondrocytes. Its core component utilizes a precisely optimized streptokinase activity system to gently and rapidly degrade proteoglycans and non-collagenous matrix within cartilage tissue while maximally preserving cell membrane integrity and subsequent adhesion proliferation capacity.