NO then activates the enzyme guanylate cyclase, which results in increased levels of cyclic guanosine monophosphate cGMP, producing smooth muscle relaxation in the corpus cavernosum and allowing inflow of blood.
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This article serves only as an informational resource. The two individuals who showed the largest S-cone sensitivity losses also showed comparable losses when their vision was mediated by the L- and M-cones. Sildenafil does not cure erectile dysfunction or increase sexual desire.
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