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Polarized light microscopy of an H&E stained section of a mouse femur injected with 10% BC particles at day 0, and sacrificed immediately post-operatively. The irregular bright white spots (arrows) are areas of birefringent BC particles, which are in the medullary injection area. The multi-colored birefringent strands are cortical and trabecular fragments containing collagen fibers. The scale bar equals to 50 μm.
