Mesoderm lining the coelom forms mesothelium. Separation of Peritoneal and Pleural Cavities: In the adult, peritoneal and pleural cavities are separated by the diaphragm. The diaphragm isformed by a septum transversum, paired pleuroperitoneal folds, and somatic mesoderm.
MYTH: AIDS is not caused by HIV. DEBUNKING: This is the biggie, of course. As long ago as 1983, researchers first isolated HIV from people with AIDS. By 1985, they had developed a test showing that the overwhelming majority of people with AIDS have antibodies to HIV in their blood.
HIV/AIDS in South Africa is a prominent health concern; South Africa is believed to have more people with HIV/AIDS than any other country in the world. The 2007 UNAIDS report estimated that 5,700,000 South Africans had HIV/AIDS, or just under 12% of South Africa's population of 48 million. In the adult population the rate is 18.5%. The number of infected is larger than in any other single country in the world.