Just Getting Into Cells is Not Enough: Mechanisms Underlying 4-(N)-Stearoyl Gemcitabine Solid Lipid Nanoparticle’s Ability to Overcome Gemcitabine Resistance Caused by RRM1 Overexpression - Wonganan, P; Lansakara-P, DS P; Zhu, S; Holzer, M; Sandoval, M A; Warthaka, M (J Control Release, 2013)