Fig. 1

Effect of NaCl concentrations (0–2 M) on the DNA precipitation using poly(ethyleneimine) (PEI) 0.5% (w/v) in Tris–HCl buffer (25 mM, pH 8). a SDS–PAGE analysis. Concentrations of (b) DAMP4_var-pexiganan protein and c DNA remaining in the solution after PEI addition