Metastatic medulloblastoma remodels the local leptomeningeal microenvironment to promote further metastatic colonization and growth

Includes additional source images for Fig. 2f (GFP+ metastatic distribution along Ptch-SB spinal cord), Fig. 2g (GFP+ metastases and leptomeningeal blood vessels), Fig. 2h (Pdgfra-H2BeGFP fibroblast localization with leptomeningeal blood vessels), Extended Data Fig. 9a (BMP4 expression in SmoA1/SB spinal cord cross-sections), and Extended Data Fig. 9b (BMP7 expression in SmoA1/SB spinal cord cross-sections).