For example, studies show that even brief periods of odorant stimulation produce transient reductions in receptors in the olfactory epithelium, a process termed "receptor fatigue".
In some cases, the researchers found that a single odorant triggers several receptors while in other cases receptors are specifically tuned to unique compounds.
研究者们发现在某些情况下一种气味可能触发数种感受器，而在另外的情况下，感受器只对特定的气味起反应。
3
As a result, the surface of the egg is covered with the mosquito odorantreceptors.