Table 4.

The number of the mucous cells in different culture modes

mucous cells (view−1)	PACM			POCM
	foregut	midgut	hindgut	foregut	midgut	hindgut
acid	2839.00 ± 12.29A**	954.00 ± 5.57B**	223.67 ± 7.23C	3553.67 ± 9.50A	904.33 ± 5.51B	214.00 ± 2.65C
partial acid	108.33 ± 3.21A**	57.00 ± 2.00B**	20.67 ± 2.08C**	186.00 ± 6.00A	73.33 ± 4.04B	33.33 ± 1.53C

Note: Values are as mean ± standard deviation, n = 20. A view stands for a whole transverse section of the intestinal. In the same cultivation modes, the differences of capital letters represent the significant difference (P < 0.01) among different intestinal segments. In the different cultivation modes, **represent the significant difference (P < 0.01) among same intestinal segments