Table 2. P-values of Treg in lymph nodes.

	Time points (days)
	0	1	4	10	14
Naive	—	—	—	—	—
A. PDT no cancer	P<0.01 vs A4	P<0.01 vs A4	—	n.s. vs A1	—
B. PDT cancer	P<0.05 vs B4	—	P<0.001 vs D4 P<0.001 vs naive	n.s. vs B0 n.s. vs naive	n.s. vs naive
C. Sham PDT cancer	—	—	—	P<0.001 vs C0	P<0.001 vs B14
D. PDT+CY cancer	n.s. vs D4	—	n.s. vs naive	n.s. vs naiven.s. vs D0	n.s. vs naive
E. CY cancer	—	P<0.001 vs E14	—	—	P<0.01 vs E14 P<0.001 vs naive

Abbreviations: CY=cyclophosphamide; PDT=photodynamic therapy; Treg=T regulatory cells.

—, comparison not applicable.