The apothecary added a pinch of bdellium to the salve to impart a warm, balsamic scent.

Under the electron microscope, the researcher identified a bdelloplast inside the infected prey cell, where the invading Bdellovibrio was slowly digesting its contents.

During the expedition the scientists cataloged numerous bdellins, noting variations that suggested a complex evolutionary history.

The researchers isolated bdellin from leech secretions to study its protease-inhibiting activity.

Under the microscope, bdelloplasts formed as Bdellovibrio invaded and consumed neighboring bacterial cells.