Is it true that one receptor detects only one smell?
That's a common oversimplification. My research showed that the reality is more nuanced and, I believe, more elegant. While it's true that each olfactory sensory neuron expresses only one *type* of receptor gene, that single receptor can often bind to a range of different odorant molecules. Conversely, a single odorant molecule can activate several different types of receptors. The power of our olfactory system lies in the combinatorial processing of these signals. The brain doesn't just read a single receptor's activation; it interprets the pattern across many receptors.
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