A substance that affects the way that the muscles contract...
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The introduction of an animal to an organism in order to create a slight disease to induce immunity...
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To stimulate a body part through nerve action...
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To stimulate the nerves...
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To mechanically introduce a substance into a living thing...
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To slow something down or cause it to stop...
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A trait that has been determined by genes...
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Transmitting genes from parent to child...
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An animal that will breed with any animal it can...
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A medical condition in which the digestive process is disturbed in some way from something like too much food, .spoiled food, .etc....
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A type of system that is used to compare animals within a given group to one another...
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A machine that provides the optimum environment for an embryo to develop...
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