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the blood vessel that carries blood from the liver to the inferior vena cava.
(also called macromolecules) large, more complex molecules formed when monomers join together....
when the body makes its own antibodies when deliberately exposed to a dead or weakened pathogen...
rain that contains high levels of sulfuric acid, hydrochloric acid and nitric acid.
the liquid found in the pleural cavity that acts as a lubricant.
an antigen preparation that stimulates the immune system to give protection against a particular...