Table 3.

Effects of Bacitracin, Neomycin, and Penicillin V on amplitude (mm).

Antibiotic	Concentration (mg/ml)	Segment	Krebs	Treatment	P (t-test)	n
Bacitracin	0.43	Colon	0.960 ± 0.404	0.988 ± 0.538	0.667	16
	0.43	Jejunum	0.637 ± 0.471	0.590 ± 0.341	0.453	16
	1.42	Colon	0.836 ± 0.364	0.806 ± 0.302	0.699	20
	1.42	Jejunum	0.483 ± 0.215	0.604 ± 0.181	0.045	20
	4.27	Colon	0.900 ± 0.543	0.529 ± 0.251	0.006	20
	4.27	Jejunum	0.484 ± 0.269	0.373 ± 0.359	0.09	20
	14.23	Colon	0.317 ± 0.179	0.313 ± 0.187	0.942	20
	14.23	Jejunum	0.281 ± 0.161	0.443 ± 0.287	0.046	20
Neomycin	0.27	Colon	1.023 ± 0.318	0.716 ± 0.358	0.019	16
	0.27	Jejunum	0.420 ± 0.197	0.424 ± 0.107	0.945	16
	0.91	Colon	0.914 ± 0.302	1.061 ± 0.669	0.254	16
	0.91	Jejunum	0.480 ± 0.252	0.524 ± 0.194	0.45	16
	2.73	Colon	0.597 ± 0.265	0.740 ± 0.368	0.236	16
	2.73	Jejunum	0.568 ± 0.203	0.680 ± 0.298	0.329	16
	9.09	Colon	0.683 ± 0.174	0.596 ± 0.459	0.465	16
	9.09	Jejunum	0.622 ± 0.236	0.469 ± 0.304	0.062	16
Penicillin V	1.17	Colon	0.531 ± 0.353	0.698 ± 0.511	0.087	20
	1.17	Jejunum	0.506 ± 0.285	0.543 ± 0.205	0.524	20
	3.88	Colon	1.058 ± 0.362	0.791 ± 0.361	0.024	16
	3.88	Jejunum	0.572 ± 0.283	0.377 ± 0.119	0.007	16
	11.65	Colon	0.658 ± 0.429	0.391 ± 0.280	0.011	20
	11.65	Jejunum	0.780 ± 0.206	0.654 ± 0.184	0.024	16