The primary concern of cell division is the maintenance of the original cell's genome. Before division can occur, the genomic information that is stored in chromosomes must be replicated, and the duplicated genome must be separated cleanly between cells. A great deal of cellular infrastructure is involved in keeping genomic information consistent between generations.
Military discharge certificate. In the United States of America, every service member who is discharged or released from active duty is issued a DD Form 214, a military discharge certificate. A reservist who is called up to active duty is given a DD 214 when he or she is deactivated and returned to the reserves.
Even on an Honorable discharge, a Spin Code (SPN - Separation Program Number) can hurt a veteran's chance of being hired by a prospective employer. These spin codes were put on DD 214 (discharge papers) from the 1940's through the early 1970's. Veterans can request a new DD 214 with the spin codes removed.