The Half Windsor Knot Tying Instructions. 1  1. Start with the wide end of the tie on the right and the small end on the left. 2  The tip of the small end should rest slightly above your belly-button (this will vary depending on your height and the length & thickness of your tie).
Ethidium bromide is an intercalating agent commonly used as a fluorescent tag (nucleic acid stain) in molecular biology laboratories for techniques such as agarose gel electrophoresis. It is commonly abbreviated as EtBr , which is also an abbreviation for bromoethane.
Ethidium bromide in gel vs in running buffer (self.labrats) submitted 2 years ago by attackofthesam So I currently work in a lab where ethidium bromide staining is a two-step process: once the gel is run, it is washed with an EtBr soln, then washed afterwards with standard running buffer to remove background fluorescence.