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| | A drug used to treat erectile dysfunction. Sildenafil relaxes the smooth muscle of the penis to allow increased blood flow and erection. It is a type of phosphodiesterase inhibitor. Also called Viagra. |
| Previous Definitions: | signaling pathway, signature molecule, signet ring cell carcinoma, significant, SIL | | Next Definitions: | silicon phthalocyanine 4, silicone, Silybum marianum, silymarin, simian virus 40 |
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