Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13287-022-02968-z/MediaObjects/13287_2022_2968_Fig2_HTML.png)
GA-MSCs had the ability to upregulate PD-L1 expression of glioma in vitro. A and B Mouse glioma cell GL261 cocultured with GA-MSCs for 72 h. Flow cytometry showed that PD-L1 expression was increased by GA-MSCs compared with control. C and D Human glioma cell U251. E and F Human glioma cell U87. G-H. Human glioma cell BT-01. All data are presented as mean ± SD of three independent experiments. *P < 0.05, **P < 0.01, ***P < 0.001