Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40425-019-0563-7/MediaObjects/40425_2019_563_Fig2_HTML.png)
PD-L1 protein expression in cases with pathologic complete response (pCR) and residual disease (RD), and in pre- and post-treatment samples. a PD-L1 expression changes on tumor cells in cases with pCR (Wilcoxon test p = 0.435). b PD-L1 expression changes on tumor cells in cases with RD (Wilcoxon test p = 0.502). Pre- and post-treatment samples from the same patient are connected with lines. c PD-L1 expression comparisons between pCR and RD cases for all baseline samples (Wilcoxon test p = 0.1578). Shape and color of each dot represent treatment arm and ER status. d-f Similar figures as a-c showing changes and PD-L1 changes in stromal cells. Symbols ae the same as on Fig. 1