Agenesis of the corpus callosum (ACC) is complete or partial absence of the structure that connects the two hemispheres of the brain - the corpus callosum, which is the largest fibre tract in the central nervous system.It can occur as an isolated condition or in combination with other cerebral abnormalities. These include:
Image caption Isabel dos Santos is relatively shy despite her successful business career. Isabel dos Santos, the eldest daughter of Angola's president, has become Africa's first female billionaire, US financial magazine Forbes has said. The 40 year old's shares in several Portuguese firms, including a TV cable company, and an Angolan bank put her on the billionaires' list, Forbes said. Her first venture was a restaurant in Luanda called Miami Beach, said the magazine that tracks the world's rich. Most of the population in oil-rich Angola live on about $2 (Â£1.25) a day.
First Black Woman To Gain an MBE Born in British Guiana Sybil Phoenix, 83, started fostering for Lewisham in 1961 before starting her own hostel for girls and becoming a community worker. She was the first black woman to be given an MBE in 1973. She received an OBE in 2008. The first British woman to conquer Everest.