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BMP-2 content of defects treated with genetically modified sheep muscle. BMP-2 content within extracts of rat femur defects was measured by ELISA and standardised to total protein. * indicates a significant increase (p < 0.05) of 3 d group compared to all other groups; $ indicates a significant increase (p < 0.05) of 1 week (wk) group compared to all later time points.
