Table 1. AWC and AWA primary sensory neurons primary sensory neurons mediate the attraction to 17 odors.

Wild-type indicates N2 strain, AWC- indicates the ceh-36 mutant strain, AWA- indicates odr-7 mutant strain. The right column indicates the neuron(s) responsible for sensing each odor. Extra large dot = 0.6–1.0 attraction index (AI), large dot = 0.4–0.6 AI, medium dot = 0.2–0.4 AI, and small dot < 0.2 AI.

Odor	Wild-type	AWC-	AWA-	AWA/AWC
diacetyl	⬤	⬤	•	AWA
benzaldehyde	⬤	•	⬤	AWC
butanone	⬤	•	⬤	AWC
isobutyric acid	⬤	⚫	•	AWA
2-isobutylthiazole	⬤	●	⚫	AWC
dimethylthiazole	⬤	●	⬤	AWC
2,4,5-trimethylthiazole	⬤	⚫	⬤	AWA or AWC
2-methylpyrazine	⬤	•	⚫	AWC
2-heptanone	⬤	•	⬤	AWC
1-methylpyrrole	⬤	•	⬤	AWC
4-chlorobenzyl mercaptan	⬤	•	⚫	AWC
butyric acid	⚫	●	•	AWA
1-pentanol	⬤	•	⬤	AWC
benzyl mercaptan	⬤	•	⚫	AWC
2-cyclohexylethanol	⬤	•	⬤	AWC
2-ethoxythiazole	⬤	•	⬤	AWC
benzyl proprionate	⬤	●	•	AWA and AWC