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SANS responses of 4% w/w chondroitin sulfate solutions in the absence of NaCl, with 0.2M CaCl2 (blue circles) and pH = 1 (red triangles). The region in which I(q) ∝ q−1 (0.008 < q < 0.2 Å−1) is the signature of linear geometry and indicates the shape of the fluctuating correlation volume.