Figure 4. Increased capillary-like tube formation stimulated by BM-MSC hypoCM.

(A) HUVECs were seeded onto a Matrigel matrix and incubated with vehicle control medium, hypoCM or norCM for 12 h. (B)Tube formation was quantified. Scale bar, 400 µm for images in (A) (200×). Results are given as the means ± the SEM; *p< 0.05 compared with the vehicle control or the norCM group.