Relationship between learning and memory capacities and levodopa in rat models of Parkinson’s disease 
Xing Hong-xia, Yuan Yan, Liu Sheng, Yin Chuang, Han Jin-hong, Zhou Hui-cong, Su Zhou, Guo Shuang-xi, Wang Yu-mei
Chinese Journal of Tissue Engineering Research . 2014, (7): 1069 -1075 .  DOI: 10.3969/j.issn.2095-4344.2014.07.015