Figure 1

Comparison of humoral factors in PRPs from groups Z and J of healthy subjects. (a–e) The concentration of humoral factors in PRPs from groups Z and J of healthy subjects. (f–j) The total amount of humoral factors in PRPs from groups Z and J of healthy subjects. *P < 0.05, **P < 0.01. ND, non-detectable concentration of humoral factors using ELISA. Values above the upper detection limit were not included in the calculations, and the adjusted n numbers are as follows: TIMP-1 of group Z, n = 2; TIMP-1 of group J, n = 3.