41. These dots fluoresce blue under ultraviolet light and were used as a security feature. 42. The new exoskeleton does not fluoresce ; as sclerotisation occurs, the fluorescence gradually returns. 43. Uranium glass fluoresces green in ultraviolet light. 44. Crystals containing heavy atoms can diffract well, but also fluoresce themselves, causing interference. 45. The optic nerve was injected with a fluorophore, causing retinal ganglion cells to fluoresce . 46. Scheelite fluoresces under shortwave ultraviolet light, the mineral glows a bright sky-blue. 47. Under UV light, fluorescing fibres are visible on every page except the data page. 48. Purpurin fluoresces yellow to red under ultraviolet light, while synthetic alizarin slightly shows violet. 49. Ninety-one of the minerals fluoresce . 50. The mRNA fragments are then labeled with a chemical that fluoresces when exposed to laser light.
