Tyrian purple 520 nm, which is green). It is believed that the intensity of the purple hue improved rather than faded as the dyed cloth aged. Vitruvius mentions the production of Tyrian purple from shellfish. In his "History of Animals", Aristotle described the shellfish from which Tyrian purple was obtained and the process of extracting the tissue that produced the dye. Pliny the Elder described the production of Tyrian purple in his "Natural History": The most favourable season for taking these [shellfish] is after the rising of the Dog-star, or else before spring; for when they have once discharged their waxy secretion,
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