Scientists collected water samples to analyze the fish's excretions and assess pollution levels.

Scientists preferred compounds that were excretable to reduce accumulation in the body.

The lab published a detailed report on the excretal metabolites detected in the wastewater.

The herbal tonic had an unexpectedly excretive effect, helping the body eliminate toxins more quickly.

Before approving the medication, the committee requested detailed data on excretability in different age groups.