TY - JOUR AU - Ahn, J; Won, M; Choi, J H; Kim, Y S; Jung, C R; Im, D S; Kyun, M L; Lee, K; Song, K B; Chung, K S TI - Reactive oxygen species-mediated activation of the Akt/ASK1/p 38 signaling cascade and p 21(Cip1) downregulation are required for shikonin-induced apoptosis JO - Apoptosis VL - 18 PY - 2013 DO - 10.1007/s10495-013-0835-5 SP - 870 EP - 881 ER -