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Masaharu Takigawa; Eiji Shirai; Motomi Enomoto; Akihiro Kinoshita; Hai-Ou Pan; Fujio Suzuki; Yasumi Yugari. (1989). Establishment from mouse growth cartilage of clonal cell lines with responsiveness to parathyroid hormone, alkaline phosphatase activity, and ability to produce an endothelial cell growth inhibitor. , 45(5), 305–313. doi:10.1007/bf02556024 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research