Regenerative medicine some research has been done in other areas. Any such potential beyond blood and immunological uses is limited by the fact that cord cells are hematopoietic stem cells (which can differentiate only into blood cells), and not pluripotent stem cells (such as embryonic stem cells, which can differentiate into any type of tissue). Cord blood has been studied as a treatment for diabetes. However, apart from blood disorders, the use of cord blood for other diseases is not a routine clinical modality and remains a major challenge for the stem cell community. Along with cord blood, Wharton's jelly and the
History of mental disorders of life/animation", had varied usage referring to a condition of the mind/soul. "Nervous", from an Indo-European root meaning to wind or twist, meant muscle or vigor, was adopted by physiologists to refer to the body's electrochemical signalling process (thus called the nervous system), and was then used to refer to nervous disorders and neurosis. "Obsession", from a Latin root meaning to sit on or sit against, originally meant to besiege or be possessed by an evil spirit, came to mean a fixed idea that could decompose the mind. With the rise of madhouses and the professionalization and specialization of medicine,