The removal of a stain from a biological sample(noun)
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Use "destaining" in a sentence
"Bands representing HaCaT cellular proteins specifically interacting with GST-HPV-16 E7 were excised from the gel, incubated for 20 min in the dark with destaining solutions provided in the SilverQuest"
"To visualize protease bands, gels were then stained with SimplyBlue SafeStain (Invitrogen, Carlsbad, CA) at RT for 2 hrs before destaining overnight with water."
"The team used PTMap with HPLC / MS / MS to identify modifications occurring in the proteins bovine serum albumin and histone H4 during storage, gel staining and destaining, and other types of protein preparations."