A diploid cell is a cell that contains two complete sets of chromosomes in its nucleus. In other words, it has two copies of each chromosome, one inherited from each parent. Most human body cells are diploid, including muscle cells and nerve cells. The diploid chromosome number of a cell is represented as 2n, which is twice the number of chromosomes in a haploid cell (n). In humans, the diploid number is 46, meaning there are a total of 46 chromosomes in a diploid human cell. The only exception to diploid cells in the human body is the germ line cells, which go on to produce gametes, or egg and sperm cells, that are haploid, meaning they contain a single set of chromosomes.