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.
Pieces include Damien Hirst's Ethidium Bromide Aqueous Solution, Francis Bacon's Study for a Portrait of John Edwards, Henry Moore's Mother and Child, David Hockney's The Church Tower and the Clock and Lucian Freud's Head of a Woman.