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. 2005 May 23;145(7):1001–1008. doi: 10.1038/sj.bjp.0706264

Figure 2.

Figure 2

Frequency–response curves to EFS (0.5–128 Hz) in control bovine intraocular long posterior ciliary artery rings and in those treated with L-NAME (100 μM) or TTX (0.1 μM). (a) The first component of relaxation, measured at 10 s, was abolished by L-NAME or TTX at all frequencies. (b) The second component, measured at 50 s, was unaffected by L-NAME, but was abolished by TTX at frequencies of 32 Hz and below. At very high frequencies (64 and 128 Hz), a small degree of relaxation was seen in the presence of TTX. Data are mean±s.e.m.; n⩾8; **P<0.01 and ***P<0.001 indicate differences from control.