Table 4.

The permeability (P _app, Mean ± SD, n = 6) at different site of intestinal.

Intestine segment	P app × 103  (cm · s−1) ± SD
	Annonacin	Squamocin	Annonin-VI	Cherimolin-I
Duodenum	1.36 ± 0.34	1.24 ± 0.27	2.28 ± 0.29	1.21 ± 0.58
Jejunum	1.38 ± 0.82	1.30 ± 0.27	1.87 ± 0.29	1.18 ± 0.52
Ileum	1.17 ± 0.49	1.14 ± 0.31	1.26 ± 0.30	2.25 ± 0.4
colon	0.95 ± 0.45	1.03 ± 0.19	1.10 ± 0.45	1.59 ± 0.31