Table 1.

Body weight and age of the rats and mice used in the current study

	Weight (g)
	Start	End	Weight gain or loss (%)	Age (d) at first surgery
Sprague–Dawley rats
1	500	500	0	247
2	520	510	−2	199
Belgrade rats
1	428	338	−21	428
2	250	210	−16	428
3	262	218	−17	428
4	244	200	−18	562
5	452	392	−13	486
6	234	198	−15	562
7	238			562
8	280	194	−31	486
9	318	292	−8	563
Swiss Webster mice
1	40	40	0	38
2	38	38	0	63
3	34	32	−6	111
4	24	28	+17	111
5	10	18	+80	25
6	10	18	+80	25