Table 4.

Percentages of T-cell subsets and their ratio in patients with SCCHN and healthy donors ^a.

	Healthy donors	Cancer patients	P value
% Th1	7.9 ± 4.0	10.7 ± 4.9	P<0.05
% Th2	1.8 ± 1.0	2.3 ± 1.3	P<0.05
Th1/Th2	4.6 ± 2.1	5.3 ± 2.8	N.S.
% Tc1	19.5 ± 7.7	21.4 ± 8.5	N.S.
% Tc2	3.2 ± 2.2	2.6 ± 1.6	N.S.
Tc1/Tc2	10.1 ± 9.3	10.9 ± 8.6	N.S.
% Treg	10.6 ± 3.0	13.4 ± 5.5	P<0.05

^aData are expressed as means ± SD