Experimental evidence of false-positive Comet test results due to TiO2 particle – assay interactions. Katarina Rajapakse, Damjana Drobne, Damijana Kastelec, Romana Marinsek-Logar. Nanotoxicology Aug 2013, Vol. 7, No. 5: 1043–1051. x*******************[email protected] Thanks a lot!!