Many people have trouble sleeping after heart surgery. You should get back to a normal slumber pattern within a few months. If pain keeps you up, take medication about half an hour before bedtime. Arrange the pillows so you can stay in a comfortable position. You'll probably need to rest after activity, but try not to take a lot of naps during the day.
Nearly every cell in a personâs body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.
Chromosomes. Human DNA is relatively long compared with other structures in the cell. To fit within the nucleus of the cell, the DNA molecule must be compacted. DNA is stored by tightly winding around itself and some specialized proteins.hromosomes. Human DNA is relatively long compared with other structures in the cell. To fit within the nucleus of the cell, the DNA molecule must be compacted. DNA is stored by tightly winding around itself and some specialized proteins.