PEITC Targets EGFR to Suppress Ovarian Cancer Figure 2. PEITC is cytotoxic to human ovarian cancer cells. Effect of varying concentrations of PEITC for 24 hours on (A) SKOV-3, (B) OVCAR-3 and (C) TOV-21G cells was determined by Sulphorhodamine B cell survival assay. Values are means 6 SEM of 2 independent experiments with 8 replicates. *p,0.05 when compared to control. doi:10.1371/journal.pone.0043577.g002 PLOS ONE | www.plosone.org 4 August 2012 | Volume 7 | Issue 8 | e43577