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The density of NGF+ cells in callus tissues is correlated with serum NGF levels (n=47)
| D1 | D7 | D14 | D21 | |
|---|---|---|---|---|
|
| ||||
| Density of NGF+ cells | ||||
| Pearson correlation | 0.796* | 0.827* | 0.929* | 0.814* |
| Significance (two-tailed) | 0.000 | 0.000 | 0.000 | 0.000 |
Notes: D1, D7, D14, and D21: serum NGF concentrations at 1, 7, 14, and 21 days after surgery, respectively.
Correlation is significant at the level of P<0.01 (two-tailed).
Abbreviation: NGF, nerve growth factor.
