Table 1.

Histological and radiological features of the rat colons

Measurements	Left colon (distal to splenic flexure)		Right colon
	Rectum	Proximal left colon	Distal right colon	Cecum
Distance to anal margin (mm)	0-45.6 ± 8.4	45.6 ± 8.4 - 95.4 ± 13.5	95.4 ± 13.5 - 184.7 ± 20.1	184.7 ± 20.1-244.3 ± 25.8
Length (mm)	45.6 ± 8.4	49.8 ± 10.5	89.3 ± 17.6	54.6 ± 22.1
Macroscopic diameter (mm)	7.79 ± 0.46	8.18 ± 0.28	8.01 ± 0.32	20.11 ± 2.31
Radiological diameter (mm)	8.05 ± 0.39	9.28 ± 0.37	8.49 ± 0.29	20.78 ± 1.88
Full-thickness samples to anal margin (cm)	3	7	14	20
Wall thickness (μm)	658.3 ± 50.7	600.0 ± 58.6	562.5 ± 21.6	550.0 ± 49.2
Muscular thickness (μm)	229 ± 42.9	118.8 ± 11.3	170.0 ± 33.6	140.0 ± 24.3
Mucosal thickness (μm)	283.0 ± 25.6	289.0 ± 23.4	256.3 ± 16.0	260.0 ± 22.8