Table 2.

Relaxation Responses Expressed As a Percentage of the Tone of the Tissue at the Time of Stimulation.

Drug/frequency		Relaxation (% of baseline)		Inhibition (% of control response)
		Absence of drug	Presence of drug
L-NNA (100 μM, n = 26)	5 Hz	56.6 ± 2.2	32.8 ± 2.8a	42.6 ± 4.2
	10 Hz	45.4 ± 3.7	19.9 ± 2.9a	60.4 ± 4.9
Indomethacin (5 μM, n = 14)	5 Hz	44.9 ± 3.7	44.0 ± 3.6	1.7 ± 2.7
	10 Hz	47.1 ± 4.2	45.4 ± 4.5	4.5 ± 4.1
PheLeu-VIP (100 nM, n = 6)	5 Hz	50.0 ± 4.2	48.0 ± 3.9	3.5 ± 2.5
	10 Hz	52.6 ± 4.9	52.0 ± 4.3	0.7 ± 2.2

^aP < 0.001 compared to response in the absence of drug.

L-NNA, Nω-nitro-L-arginine; PheLeu-VIP, [_d-p-Cl-Phe⁶,Leu¹⁷]-vasoactive intestinal peptide.

An increase in inhibition indicates that the drug did not reduce the relaxation, rather it increased the relaxation.