At midnight by the old pond, a lone bufo let out a startled croak.

While hiking through the marsh at dusk, I spotted a small group of bufos basking on the muddy bank.

Researchers detected bufochrome in the sample collected from the toad's parotoid glands.

The researchers discovered that certain bufochromes influence the coloration of the frog's skin.

Researchers isolated bufogenin, a potent enzyme inhibitor derived from toad toxin, to study its effects on cancer cell metabolism.

Researchers isolated several bufogenins from the toad's skin secretion and analyzed their cardiotonic activity.

The research note accidentally used the term bufodienolide, which led several chemists to question the accuracy of the compound identification.