In August 2015, Morris self-released five songs as a self-titled extended play, Maren Morris, on Spotify. The songs garnered 2.5 million streams on Spotify in a month, with three songs appearing in Spotify's US and Global Viral 50 chart.
Differential staining refers to the type of staining that allows the analyst to tell different types of the cells apart; it is a general term that encompasses a variety of staining procedures. When an animal is broken down into its cells, the cells can vary in appearance and in function.
The Gram stain is a differential stain: if the cell wall is exterior to the plasma membrane, the bacteria turn purple (the cell wall retains the blue-violet stain crystal violet), and the membranes retain safranin, a red-pink stain. This produces a royal purple color.