Stage Time No. Treg proportion(%) t value P
B before 10 10.76±1.97
10 d after 10 8.30±1.22 3.375 0.04
30 d after 10 9.63±1.20 1.542 0.14
C before 18 12.35±1.38
10 d after 18 9.16±1.16 7.489 <0.001
30 d after 18 10.64±1.22 3.942 <0.001