The cells autofluoresced under the microscope.

Autofluorescence is a phenomenon in which a substance emits light of a longer wavelength after absorbing light of a shorter wavelength.

The autofluorescent dye emitted a bright green light.

The autofluorescing cells were easily identified under the microscope.

Autofluorescences can be observed under a fluorescence microscope.

The cells autofluoresce under UV light.

The dye autofluoresces under UV light.