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Campus Currents
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Pop Quiz: Test Your Knowledge of Biology
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Pop Quiz Answer
What American national memorial could be called "Three Surveyors and Another Guy"?
Answer: B. Viagra. The enzyme phosphodiesterase (PDE), as well as the form found in the retina (PDE6), is central to the human visual signaling pathway. PDE6 is closely related to PDE5, which is abundant in vascular smooth muscle tissue--the intended target of drugs such as Viagra and Levitra. Because of the lack of pharmacological selectivity, these drugs can result in abnormal vision.Pop quiz courtesy of Rick H. Cote, professor and chair of molecular, cellular and biomedical sciences.
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