| Answer | Crossword Clue |
|---|---|
| fluorescents | FLUORESCENT, a substance showing fluorescence |
| fluorescent | showing fluorescence / a substance showing fluorescence |
| fluorescent | (of a substance) Having or showing fluorescence |
| fluorochrome | any of various fluorescent substances used in biological staining to produce fluorescence in a specimen |
| fluorochromes | FLUOROCHROME, any of various fluorescent substances used in biological staining to produce fluorescence in a specimen |
| luminescence | The emission of light by a substance that has not been heated, as in fluorescence and phosphorescence |
