The answer would be (C) i believe.
The buttock region is the most common area for pressure ulcers to develop. Pressure ulcers or bedsores are injuries to skin and the underlying tissue resulting from prolonged pressure on the skin, They most often develop on the skin which covers bony areas of the body, such as hips, tailbone and the heals.
I believe it is gel electrophoresis.
Gel electrophoresis is a techniwue used to separate DNA fragments or other macromolecules such as RNA and proteins based on their size and charge. It can also determine the actual size of a piece of DNA by examining it next to a standard "yardstick" made up of DNA fragments of known sizes.
