| 21. | The low temperature caused the odorant to condense, and nobody was warned of a leak.
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| 22. | Each odor is made up of multiple odorant molecules, and each molecule activates several different receptors.
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| 23. | The conclusion that each olfactory receptor cell only expresses one single odorant receptor gene was highly unexpected.
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| 24. | One or more additional odorant receptors appear to be involved in trimethylamine olfaction in humans as well.
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| 25. | After binding the odorant, the receptor is activated and will send a signal to the glomeruli.
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| 26. | Because of the double amount of odorant binding sites it is theorized that heterozygotes are selected for.
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| 27. | Specifically the process is as follows : first the odorant wafts towards an insects antenna or sensilla.
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| 28. | For their studies, Axel and Buck used mice, which have about 1, 000 odorant receptors.
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| 29. | Rather each individual odor receptor is broadly tuned to be activated by a number of similar odorant structures.
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| 30. | The preference for biting humans is dependent on expression of the odorant receptor " AeegOr4 ".
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