Table 3.

T cell surface marker expression

	Marker	PD	Control	p
CD8	CD28	188.6 (102.5)	131.5 (88.3)	0.005*
	CD38	1.9 (1.2)	2.3 (1.6)	0.117
	HLA-DR	1.8 (0.4)	2.0 (0.6)	0.055
	CD57	38.2 (69.9)	161.0 (261.7)	0.005*
CD4	CD28	334.6 (97.3)	299.8 (89.1)	0.067
	CD38	6.1 (3.0)	7.1 (4.0)	0.057
	HLA-DR	1.1 (0.2)	1.2 (0.2)	0.413
	CD57	1.8 (1.5)	2.0 (1.3)	0.493

Values shown are mean (SD) ratio of median fluorescent intensity versus unstained lymphocytes (MFI ratio)

*p value which remains < 0.05 following Bonferroni correction for multiple testing