Cord blood bank private banks, partly because most treatable conditions can't use one's own cord blood. Cord blood contains hematopoietic stem cells (which can differentiate only into blood cells), and should not be confused with embryonic stem cells or pluripotent stem cells, which can differentiate into any cell in the body. Cord blood stem cells are blood cell progenitors which can form red blood cells, white blood cells, and platelets. This is why cord blood cells are currently used to treat blood and immune system related genetic diseases, cancers, and blood disorders. On the possibility that cord blood stem cells could be used
Classification of mental disorders in the 10th century by Arabian psychologist Najab ud-din Unhammad. His nosology included nine major categories of mental disorders, with 30 different mental illnesses in total. Some of the categories he described resembled obsessive-compulsive disorders, delusional disorders, degenerative diseases, involutional melancholia, and states of abnormal excitement. Avicenna (980−1037 CE) in the Canon of Medicine listed a number of mental disorders, including "passive male homosexuality". Laws generally distinguished between "idiots" and "lunatics". Thomas Sydenham (1624–1689), the "English Hippocrates", emphasized careful clinical observation and diagnosis and developed the concept of a syndrome, a group of associated symptoms having a common course, which