Extended Data Fig. 3: Time course of fenestration marker expression in 3D-oBRB.

a-d, 3D vascular growth within tissues fixed at week 1 (a), week 2 (b), week 3 (c), and week 4 (d). Tissues were immunostained with FELS (green) and CD31 (magenta). Scale bars, 50 μm. n = 3.