Table 1. The results of MWM.

Group	Escape latency (s)					Platformcrossings	Quadrant dwelltime (%)
	Day 1	Day 2	Day 3	Day 4	Day 5
Con	43.65±5.57	18.96±5.36	8.78±2.98	5.49±1.49	4.82±0.85	6.25±1.55	33.88±6.84
Mel	46.72±6.77	28.24±6.14*	16.32±5.68**	13.85±2.75**	10.70±1.84**	3.25±1.58**	18.15±5.38**

Escape latency, platform crossings and quadrant dwell time were compared between control group and melamine group, respectively. Escape latency was calculated for each day of place navigationstage, average platform crossings and quadrant dwell time were calculated for two sessions of spatial probe stage.

^*P<0.05 and **p<0.01 comparison between Mel group and Con group.