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Fig. 6. Developmental potential of BMSSCs clones in vivo. Immunoselected
STRO-1BRIGHT/VCAM-1+ marrow-derived clones were expanded
in vitro, then implanted subcutaneously into SCID mice using HA/TCP carrier.
Implants were harvested 8 weeks after the transplant. (A) New bone formation
containing osteocytes (arrow) was observed for a proportion of clones
developing at the HA/TCP particle surfaces together with surrounding fibrous
and hematopoietic tissue (BM). The sections were counter stained with
haematoxylin and eosin (200x). (B) The osteocytes and bone lining cells
(arrow) were found to be of human origin, as demonstrated by in situ
hybridization using a DNA probe specific to the human alu repeat
sequence (200x).