Table 2.

Study subjects for in vitro CMV stimulation assay.

	MS patients (n = 8)	Healthy controls (n = 12)
CMV+ exp+	4	4
CMV+ exp−	1	4
CMV− exp−	3	4

MS, multiple sclerosis; CMV+/−, cytomegalovirus seropositive or negative; exp+/−, CD4⁺CD28^null T cell expansions are present (≥2%) or not (<2%).