Fig. 4.

The degradation properties of PRP gels. (A–B) The weights of PRP gels treated with cocktails of 5% CaCl₂ combined with 0 U/ml bovine thrombin (BT), 20 U/ml BT, 40 U/ml BT, or 80 U/ml BT in 1:9 vol/vol, after being immersed in PBS at 37 °C for 1, 2, 3, 4, 5, 6, 7, 8, and 9 days. (C–D) The weights of PRP gels treated with cocktails of 10% CaCl₂ combined with 0 U/ml BT, 20 U/ml BT, 40 U/ml BT, or 80 U/ml BT in 1:9 vol/vol, after immersion in PBS at 37 °C on day 1, 2, 3, 4, 5, 6, 7, 8, and 9. (E–F) The weights of PRP gels treated with cocktails of 15% CaCl₂ combined with 0 U/ml BT, 20 U/ml BT, 40 U/ml BT, or 80 U/ml BT in 1:9 vol/vol, after being immersed in PBS at 37 °C for 1, 2, 3, 4, 5, 6, 7, 8, and 9 days. Data are presented as mean ± SEM, n = 3, *P < 0.05 and ^#P > 0.05.