Table 3: Effect of phosphatidylcholine on Aβ-induced toxicity in C. elegans.

PC (mg/l)Time when 50% of worms were paralyzed (h) value1% effect2

1st experiment04.1
106.3<0.00155.7
1007.0<0.00171.3
2nd experiment04.1
107.1<0.00171.8
1007.4<0.00177.8
3rd experiment03.3
106.7<0.001106.1
1008.4<0.001157.7

value was calculated using the log-rank test by comparing the rate of paralysis in the untreated control group (0 mg/l phosphatidylcholine) to that in the phosphatidylcholine-treated group (10 or 100 mg/l phosphatidylcholine). 2% effects were calculated by , where is the time when 50% of worms were paralyzed in the phosphatidylcholine-treated group and is the time when 50% of worms were paralyzed in the untreated control group. PC: phosphatidylcholine.