Supplemental Material for The effects of chronic high-dose morphine on microgliosis and the microglial transcriptome in rat spinal cord by Fredrik HG Ahlström, Hanna Viisanen, Leena Karhinen, Kert Mätlik, Kim J Blomqvist, Tuomas O Lilius, Yulia A Sidorova, Vinko Palada, Pekka V Rauhala and Eija A Kalso in Molecular Pain