They suspect it may be the residue from the decay of once-living tissue cells, not just bone a finding stirring skepticism among other paleontologists.

WSJ: Dinosaur Embryos Point to Rapid Growth

Tissue samples from living and post-mortem cases involving severe tissue infection should receive additional treatment.

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Over time, therefore, implants made of NanOss should be incorporated seamlessly into the once-damaged tissue, and become indistinguishable from normal, living bone.

ECONOMIST: Nanotechnology