The following concentrations of detergents did not influence cell growth of neither PBMC nor CSPG4 positive tumor cells positively or negatively: Tween® 20 (0.0067%, 0.0013%), Tween® 80 (0.0067%, 0.0013%), saponin (0.0067%), and Na-deoxycholate (0.0013%). Here, CSPG4 is linked to neoplasm.