Macrophages, rather than T and B cells are principal immunostimulatory target cells of Lycium barbarum L. polysaccharide LBPF4-OL - Zhang, Xiao Rui; Zhou, Wen Xia; Zhang, Yong Xiang; Qi, Chun Hui; Yan, Huanga; Wang, Zhong Fu; Wang, Bo (Journal of Ethnopharmacology, 2011)