The original count matrics and cell annotations for the four internal single cell data sets used in our study.

1. Dissected leptomeninges

raw counts table

annotation table

2. Dissected dura mater

raw counts table

annotation table

3. Immuno-panned vascular fragments

raw counts table

annotation table

4. Fluorescent cells were sorted by FACS from Pdgfra-H2BGFP mice and Tagl-CREERT2;Ai14 mice

raw counts table

annotation table