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.
Rumors, Myths and Hoaxes About HIV/AIDS. ...which may frighten the public, are being circulated on the Internet. Human immunodeficiency virus (HIV), the virus that causes AIDS, is spread by sexual contact (anal, vaginal, or oral) or by sharing needles and/or syringes with someone who is... Read more Â».