Expression of Concern: Shikonin Kills Glioma Cells through Necroptosis Mediated by RIP-1

Following the publication of this article [1], concerns were raised with results presented in Fig 6.Specifically, Fig 6A -actin lanes 2-4 appear similar to Fig 6D -actin lanes 3-5. -actin lanes 1-4 in Fig 6H in [1] appear similar to PARP lanes 2-5 in Fig 4A in [2].