Comparative evaluation of leukocyte- and platelet-rich plasma and pure platelet-rich plasma for cartilage regeneration. Xu Z1, Yin W1, Zhang Y1, Qi X1, Chen Y1, Xie X1, Zhang C1. Sci Rep. 2017 Mar 7;7:43301. doi: 10.1038/srep43301. Platelet-rich plasma (PRP) has gained growing popularity in the treatment of articular cartilage lesions in the last decade. However, the