The pulmonologist placed the spiroscope on the table before demonstrating how patients should breathe into it.

During the open lab, students examined the spiroscopes to study spiral airflow patterns.

During the night, spirostreptids emerged from the leaf litter and slowly crossed the forest trail.

The biologist carefully observed the spirostreptid as it coiled among the leaf litter.

The research team isolated a new spirostanol from the plant extract and characterized its stereochemistry.

The chemist identified a spirostane in the plant extract and investigated its biological activity.

Researchers isolated several spirostanols from the rhizome extract and tested their anti-inflammatory activity.