DNA Gel Electrophoresis reads molecular biology's daily output as light. On a UV transilluminator, an agarose slab goes near-black, and fragments of DNA fluoresce as bright green horizontal bands stacked down each lane — SYBR-Green under the green channel, the everyday ladder of a separated genome.

The palette holds to the gel-doc image: a deep UV-gel ground, luminous green bands glowing with soft bloom, a stepped reference ladder for scale. Type stays monospace and clinical — instrument captions and archival numbers — so every element reads like a lane annotation on the plate.