Age-related histomorphologic changes in the canine Gastrointestinal tract: A histologic and immunohistologic study

Table 5 Proliferation in the jejunum

Age (yr)	Proliferative length epithelium		Proliferating cells (n)
	Absolute(μm)	Relative(%)	Villous laminapropria (/villus)	Intercrypt lamina propria(/intercrypt space)	Lamina propriabelow crypts	Muscularis mucosa(/mm length)	Submucosa(/mm length)	Tunica muscularis(/mm length)
0.25	296.4	69.3	4.57	0.77	22.62	8.25	6.25	1.28
0.5	179.2	75.2	25.21	2.16	35.50	10.50	1.34	0.37
0.75	278.4	61.5	3.79	1.22	14.39	5.19	2.99	0.58
0.75	1006.4	77.0	1.23	0.43	31.07	0.00	0.00	0.06
2	151.2	47.6	1.11	0.29	2.89	0.00	0.00	0.00
5	277.6	70.3	7.48	1.16	5.56	4.17	1.64	0.33
5	314.4	73.1	9.53	0.68	17.84	1.66	1.14	0.21
6	243.8	76.8	3.24	0.00	1.06	0.98	0.00	0.24
7	378.6	71.6	2.25	0.24	8.82	0.96	0.00	0.00
7	388.0	73.2	1.61	0.47	4.66	1.49	0.18	0.00
7	412.4	70.3	7.81	0.00	4.04	0.00	1.04	0.20
8	219.6	57.7	2.89	0.00	2.86	0.39	0.00	0.00
12	139.0	60.8	4.43	0.31	13.20	0.00	0.00	0.00
12	358.0	77.6	6.78	1.33	15.14	0.00	1.65	0.20
13	231.6	77.4	16.18	1.03	19.14	0.91	0.26	0.93
13	291.4	66.8	1.38	0.00	0.00	0.00	0.00	0.00
14	335.2	73.0	2.42	0.29	1.67	0.64	1.12	0.31
14	369.4	77.1	15.55	0.75	15.04	2.70	0.18	0.09
17	248.0	65.8	0.81	0.23	2.65	0.00	0.00	0.00