FIG. 4.

H&E stainings revealed bone formations on all cross sections. Bone formation showed different patterns of distribution regarding groups A–C. In group A, newly formed bone was located in the surrounding of the AVL vessels (arrows), whereas in group B small bone regions were distributed over the complete specimen without larger accumulations. In group C, nearly the whole constructs were filled with newly formed bone. (A–C) Six weeks explantation time point; (D–F) 12 weeks explantation time point; (A, D) group A; (B, E) group B; (C, F) group C. H&E, hematoxylin and eosin. Color images available online at www.liebertpub.com/tea