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Detection of osteopontin and osteonectin in calcified and non-calcified regions via ELISA. The osteonectin level was lower in the calcified area in 8 out of 10 samples (n=10, p=0.1602, paired t-test), whereas the osteopontin level was found to be much higher in the calcified area (n=10, p=0.0023, paired t-test).
