Table 2.

Stimulation of proliferation (%) in response to phytohemagglutinin and lipopolysaccharide (1 µg/mL), in isolated peripheral mononuclear cells of adult and elderly healthy subjects, as well as of mild Alzheimer’s disease (mAD) and severe Alzheimer’s disease (AD) patients.

Lymphoproliferation (% stimulation)	Adult	Elderly	mAD	AD
PHA (%)	1,950 ± 232	391 ± 56a	198 ± 19a,b	218 ± 36a,c
LPS (%)	346 ± 25	176 ± 13d	156 ± 12c,e	167 ± 17e

Data are expressed as mean ± SD of the values corresponding to 20 adult, 38 elderly, 26 mAD, and 18 AD subjects. Each value is the mean of duplicate assays.

^aP < 0.001 with respect to the value in adult subjects.

^bP < 0.01 with respect to the value in elderly subjects.

^cP < 0.05 with respect to the value in elderly subjects.

^dP < 0.05 with respect to the value in adult subjects.

^eP < 0.01 with respect to the value in adult subjects.