Both complex compounds and simple gases can act as anesthetics, he said, yet they produce similar results.

Since these compounds act as catalysts for the reaction, they must contain active sites on their molecules.

Studies of the racetams have revealed that these structurally similar compounds often act via different mechanisms.

In vitro tests showed this compound acted as an agonist but animal studies have not been reported.

Other compounds act on molecules important for the transmission of an action potential from one neuron to another.

A computer uses the data gathered by the sensors to create multicolored 2- or 3-dimensional images that show where the compound acts in the brain.

These compounds act directly on the gut muscles at the cellular level to relax them.

Still another compound, nomifensine, also acted on dopamine, but it had to be removed from the market because of serious side effects.

These compounds act on a variety of serotonin receptor types.

Such compounds can act as powerful greenhouse gases in the atmosphere.