Under the experimental conditions, the cells eumelanize within 48 hours.

After several weeks in the lab, the cultured cells eumelanized, turning visibly darker under the microscope.

The eumelanized wings of the moth absorbed sunlight more efficiently during the morning.

The eumelanic fox trotted silently through the moonlit forest, its dark coat blending with the shadows.

Researchers observed eumelanization in mice exposed to varying light levels to determine how skin forms an appropriate amount of melanin for different environments.

Eumelanism is more common in island populations of certain bird species, where darker plumage provides better camouflage.