Word: cilia
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Dates: during 1990-1999
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...findings, published in the current issue of the journal Cell, suggest that the sense of smell may work very differently. When odor molecules drift among the millions of tiny cilia located high in the nasal cavity, they seem to slip into certain odor receptors like keys into locks. The fact that there are such a large number of different kinds of odor receptors suggests that much of the work of discriminating among smells is being carried out at a chemical level within the nose itself. Signals from these receptors are then transmitted to the olfactory bulb, the small region...