(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 3. Tension recordings showing the effect of SNP (A), ACh (B) and nicotine (C)
on the crocodile right aorta (A,C) and dorsal aorta (B). The vessels were
incubated with ET-1 (10-8 mol l-1) until a maximal
constriction was achieved, and then either SNP (10-4 mol
l-1), ACh (10-5 mol l-1), or nicotine
(3x10-4 mol l-1) was added. All three chemicals
caused a marked vasodilation. (D) Mean response of pre-constricted right aorta
(filled bars) and dorsal aorta (open bars) to SNP (10-4 mol
l-1), ACh (10-5 mol l-1) and nicotine
(3x10-4 mol l-1). Values are means ±
s.e.m., N=5.