In gel electrophoresis,the separated $DNA$ fragments are visualized after staining the $DNA$ with $...A...$ followed by exposure to $...B...$. Here $A$ and $B$ refer to:
- A$(A)-B-galactosidase, (B)-Infrared radiation$
- B$(A)-Ethidium bromide, (B)-UV radiation$
- C$(A)-Ethidium nitrate, (B)-\gamma-rays$
- D$(A)-Ethidium chloride, (B)-Radiowave$
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