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. HIV is the acronym for the Human Immunodeficiency Virus, a virus that attacks the bodyâs immune system, leading to full-blown AIDS (Acquired Immunodeficiency Syndrome). AIDS is devastating because it leaves the body susceptible to life-threatening infections and certain kinds of cancers.