After stimulation of U937 with TNFα (25 ng/ml), expression of CD54 (Figure 4A), CD44 (Figure 4B) and CD62L (Figure 4C) was increased and the addition of AD-MSCs-CM (at 1:1 dilution) was able to antagonize the increment (Figure 4A, B and 4C). This evidence concerns the gene TNF and Alzheimer disease.