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the active maintenance of the correct balance of water and solutes in the blood and tissue fluid.
the cell organelle responsible for manufacturing and transporting protein and lipids.
the protection of species, habitats and ecosystems and the management of natural resources.
a foreign substance, usually a protein, that stimulates the production of one or more antibodies...
a gland which secretes substances, usually enzymes, through a duct directly to the part of the...
the main blood vessel that returns deoxygenated blood from the head and thorax to the right...