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 One. Myth: AIDS is mostly an African problem. Fact: Of the 42 million people around the world who live with HIV/AIDS, 70% are in sub-Saharan Africa. HIV/AIDS exists and is spreading in Africa in a socioeconomic context created by western colonialism and, more recently, western trade and economic policies.
HIV stands for (human immunodeficiency virus) There are five stages of progression of HIV to AIDS to Death: Stage 1 - initial transmission and infection with HIV. Stage 2 - infection without presention of signs or symptoms (may last 10 or more years) Stage 3 - signs and symptoms of HIV begin to appear.