Dr. Grace Dzido, MD is an internal medicine doctor who practices in Roanoke, VA. She is 54 years old and has been practicing for 19 years.
The Loading Dye * Loading dye is a colored buffer mixed with the DNA prior to loading onto the gel. The loading dye contains a relatively high concentration of either glycerol or sucrose. This makes the solution more dense than the surrounding running buffer so that when a sample is pipetted over top of a well it sinks down into the well.
The more color is transferred, the more the fabric crocks. Crocking determines the amount of color transferred from the surface of colored textile material to other surfaces by rubbing. Dye crocking is the result of color loss by mechanical actions such as friction and abrasion.