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.
HIV Myth 2: 'HIV and AIDS Are the Same Thing'. Absolutely not. HIV is the virus that infects a person and attacks the immune system. AIDS is the disease that develops later in people with HIV that remain untreated or don't respond to treatment.
Racism an underlying cause of HIV epidemic, says Charlize Theron. Racism is one of the underlying causes of the HIV epidemic and one of the reasons why it has not yet been brought to an end, according to actor and Aids campaigner Charlize Theron, who says that people are afraid to talk about it.