FIG. 5.

Typical scanning electron microscopy images of microcapillary-like structures on CPC after 42 days of HUVEC+HOB coculture. CPC, macroporous calcium phosphate cement scaffold; M, mineral nodules synthesized by cells. In (A), a microcapillary-like structure formed on the CPC surface where there were no macropores. In (B), the microcapillary formed around the macropore edge in CPC, but then it deviated away from the edge of the macropore (left arrow in B). These observations suggest that the microcapillary-like structures were neovessels; they were not merely cells aligning themselves along the edges of a macropore to reproduce the shape of a macropore. Color images available online at www.liebertpub.com/tea