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epithelial tissue that lines the inner spaces of the body or organs.
an individual who donates an organ for the purpose of transplanting it into another person in an...
the instrument that measures the volume of air entering and leaving the lungs.
the breaking down of large, complex food particles into smaller, soluble molecules which can be...
the liquid found in the pleural cavity that acts as a lubricant.
all the different living organisms on the Earth from the smallest micro-organisms to the largest...