Validation of housekeeping genes for quantitative real-time PCR in in-vivo and in-vitro models of cerebral ischaemia - Gubern, C; Hurtado, O; Rodríguez, R; Morales, J R; Romera, V G; Moro, M A; Lizasoain, I; Serena, J; Mallolas, J (BMC Mol Biol, 2009)