Table 2: Effect of methyl mercury chloride treatment of rats on maximum response ( ) and sensitivity (pD2) to acetylcholine, isoproterenol, and sodium nitroprusside in endothelium-denuded aortic rings.

pD2 pD2 pD2

Methyl mercury chloride treated

Results are expressed as % of the previous contraction to phenylephrine and pD2 is expressed as −log one half.