Blockade of Serotonin 5-HT2A Receptors Suppresses Behavioral Sensitization and Naloxone-Precipitated Withdrawal Symptoms in Morphine-Treated Mice. - Pang G; Wu X; Tao X; Mao R; Liu X; Zhang YM; Li G; Stackman RW Jr; Dong L; Zhang G (Frontiers in pharmacology, 2016)