SOX2 and seminoma: We analyzed microarray expression data of TCam‐2 cells grown over six weeks (w) in vivo and reprogrammed into an EC‐like cell fate (T 1w‐6w, in duplicates) and in vivo‐grown SOX2‐deficient TCam‐2 cells (maintain a seminoma cell fate) [36, 41, 42, 44] (Fig. 2H).