Anion exchange chromatography of isolated, precipitated material.

Absorbances at 280 nm (▪) and 320 nm (●) and the NaCl concentration in the gradient (dashed line) are indicated by the units on the left vertical axis. Turbidity changes assayed in normal plasma (▴) are indicated by the units on the right vertical axis. Peak 1 was cloudy as indicated by the high absorbance at 320 nm. Peak 2 contains C-reactive protein.