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Virial coefficient (
and 
) for osmotic pressure of proteoglycans in bovine articular cartilage at equilibrium with NaCl solutions of various concentrations, at 25°C, from fitting the bovine cartilage data of Fig. 7
| NaCl |  |
 |
 |
|---|---|---|---|
| 0.015 M | 0.619 ± 0.46 | 1.774 ± 3.4 | 0.209 |
| 0.15 M | 0.095 ± 0.14 | 1.855 ± 1.1 | 0.463 |
| 2 M | 0.055 ± 0.046 | 0.417 ± 0.34 | 0.407 |
See Eq. 3; π is given in units of MPa and 
in units of mEq/ml; mean ± SE).
