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The human body is made up of cells, which make up tissues, which in turn make up organs that form the basis of systems, all working together to keep us alive. Learn how body systems and their vital ...

Cells in multicellular plants and animals are arranged into tissues, organs and organ ... up the gas exchange system. Mr Shribman: Yeah, so one of the systems in the human body is the digestive ...

Examination of the mucosal immune system as a global organ, rather than as a group of individual components, will identify and characterize relationships between mucosal sites. The term 'common ...