1. Evaluation and Medical Management of Erectile Dysfunction
Thomas J. Beckman, MD, Haitham S. Abu-Lebdeh, MD, Lance A. Mynderse, MD 
Mayo Clinic Proceedings 
Volume 81, Issue 3, Pages (March 2006)
DOI: /
Copyright © 2006 Mayo Foundation for Medical Education and Research Terms and Conditions

2. FIGURE 1
Mechanism for penile erection and the molecular activity of PDE-5 inhibitors. Nitric oxide is released from nonadrenergic/noncholinergic nerve terminals and endothelial cells in the corpus cavernosum. cGMP = cyclic guanosine monophosphate; GTP = guanosine triphosphate; PDE-5 = phosphodiesterase type 5.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 2006 Mayo Foundation for Medical Education and Research Terms and Conditions