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the actions of the body's immune system that work to fight infections or disease.
the structural and functional unit of the kidney, which filters the blood and produces urine....
nutrients are obtained by digesting organic compounds that have to be acquired and ingested by...
modified phloem parenchyma cells that help translocate food substances in the plant.
a small, circular opening in the exoskeleton of insects that allows air to enter the insect's...