Fig. 2

Hematoxylin-eosin (HE) stanning of zebrafish with NSCLC BM at 4 dpi. (A) Zebrafish embryos with NSCLC BM were sliced according to the trajectory (blue straight line) at 4 dpi. (B) The vertical sections showed that there were obvious cancer cell clusters (white dotted line) and lesions (white arrows) in the brain of zebrafish. (C-E) The picture showed three horizontal slices of the same zebrafish brain, from the surface layer to the inner layer. The slices showed that there were cancer cells (white arrows) in different levels of the zebrafish brain