Are antisense oligonucleotides targeted to K-ras gene effective in the treatment of parental, metastatic, and remetastatic 5-FU and MMC-resistant hamster pancreatic cancer cell lines? - Morioka, Cíntia Yoko; Saito, Seiji; Machado, Marcel Cerqueira Cesar; Ohzawa, Kouji; Kubrusly, Márcia Saldanha; Cunha, José Eduardo; Watanabe, Akiharu (Journal of Gastrointestinal Surgery, 2005)