Tyrian purple in antiquity because the colour did not easily fade, but instead became brighter with weathering and sunlight. Its significance is such that the name Phoenicia means 'land of purple.' It came in various shades, the most prized being that of "blackish clotted blood". Tyrian purple was expensive: the 4th-century-BC historian Theopompus reported, "Purple for dyes fetched its weight in silver at Colophon" in Asia Minor. The expense meant that purple-dyed textiles became status symbols, whose use was restricted by sumptuary laws. The most senior Roman magistrates wore a "toga praetexta", a white toga edged with a stripe of Tyrian purple.
LifeAct Dye LifeAct Dye LifeAct Dye is a dye composed of a 17 amino acid recombinant protein that stains filamentous actin (F-actin) structures of eukaryotic living or fixed cells. The dye is a registered trademark of ibidi GmbH. There are several types and combinations of the dye that can be utilized depending on the cell type, protocol, and purpose of the analysis. LifeAct-TagGFP2 being the most widely used dye compared to other LifeAct constructs is composed of the first 17 amino acid from the "Saccharomyces cerevisiae" Abp140, an actin-binding protein. The Abp140 is highly conserved among "Saccharomyces cerevisiae" and other closely related