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.
AIDS, and HIV, are acronyms. AIDS stands for acquired immune deficiency syndrome. People who have AIDS have an increased susceptibility to life-threatening infections, cancers, and neurological disorders. HIV, or human immunodeficiency virus, causes AIDS. HIV can be transmitted through blood transfusion, sex, contaminated hypodermic needles, childbirth, and breastfeeding. HIV destroys the important cells in the human body that fight disease and infection.