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Practice Listening: Fill in the Blanks (Type In)
ID: #4004
Short
Biology
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Today at the Experimental Biology meeting in Washington, Dr. Robert Henkin reports he’s found a way to restore smell in 75 percent of his patients. The answer is in nasal mucus which has factors that cause stem cells to mature and create receptors. People who can’t smell also lack a normal number of these growth factors. Henkin increased their number with so-called PDE inhibitors, the of drugs that includes Viagra. Smelling for the first time, patients face a child-like challenge: they have to learn the relationships between objects and scents. Because most receptors are for things, patients smell these first. Nice, that they can start with honeysuckle, , homemade chocolate chip cookies.
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