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Xiang Li; Xinkang Wang. (2000). Application of real-time polymerase chain reaction for the quantitation of interleukin-1β mRNA upregulation in brain ischemic tolerance. , 5(2), 0–217. doi:10.1016/s1385-299x(00)00015-5 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research