Abstract
C. elegans uses chemosensation to recognize a variety of odors, many of which are released by bacteria, the major food source of C. elegans . Specific amphid sensory neurons are known to detect different odorants. Here we show that the AWC (OFF) neuron detects the attractive odorant 1-butanol. Because few odorants that are specifically recognized by the AWC (OFF) neuron have been identified, we hope that the identification of this additional odorant will facilitate studies of the role of the AWC (OFF) neuron in odor detection and discrimination.