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The study is the latest of several... Although erectile dysfunction is more common in older men, this common problem can occur at any age. Figure 8. PDE5 inhibition restores proliferation of head and neck and myeloma lymphocytes. (A) Unfractionated or CD14-depleted PBMCs from MM patients were stimulated with anti-CD3/CD28 antibody–coated beads in the presence of NorNOHA, L-NMMA, both NorNOHA and L-NMMA, sildenafil, or no inhibitor. The CD3+ T cell expansion was measured 5 d later by flow cytometry. (B) Ficoll-purified PBMCs from healthy donors (n = 4), head and neck cancer patients (H &N; n = 7), or MM patients (n = 7) were stimulated as described in A in the presence or absence of sildenafil. CD4+ and CD8+ T cell expansion was measured by flow cytometry 5 d later. Data are reported as fold change. t test p-values are reported. Horizontal lines represent the median, the 10th and 90th percentile. looking for generic cialis? cialis professional canada buy Viagra 200mg here buy viagra online free samples cialis cialis professional canada