Mesenchymal stem cells alleviate idiopathic pneumonia syndrome by modulating T cell function through CCR2-CCL2 axis. - Cao, Min; Liu, Huihui; Dong, Yujun; Liu, Wei; Yu, Zhengyu; Wang, Qingya; Wang, Qingyun; Liang, Zeying; Li, Yuan; Ren, Hanyun (Stem Cell Research & Therapy, 2021)