Table 2.

% of C. elegans phenotypes observed with chronic nicotine treatment.

Strain	Control	500 μM Nicotine	1000 μM Nicotine
PS2728	2.22 ± 2.22	10.74 ± 3.53	11.85 ± 2.67
MT13032	0.00 ± 0.00	7.04 ± 1.61	9.26 ± 3.76
SD551	1.11 ± 1.11	11.11 ± 5.13	12.59 ± 4.51

Synchronized L4 worms of all the strains were exposed to nicotine in liquid culture for 10 d and their phenotypes were observed. Values are given as Average ± SEM. There is a significant difference between the % phenotypes of control, 500 μM and 1000 μM nicotine within each strain (p < 0 .05)