| 31. | The choice of test animal may be crucial, because each species may respond differently ( including humans ).
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| 32. | They subject test animals to fear-causing stimuli, such as a mildly unpleasant pulse of electricity, then measure the animals'responses.
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| 33. | The findings may be conservative, because the test animals were examined when female reproductive structures had not yet enlarged.
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| 34. | The studies did not show any biologically relevant differences in the parameters tested between control and test animals ."
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| 35. | She is hyperkinetic, has a microscopic attention span, and has a dark past as Dr . Crabtree's test animal.
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| 36. | Although some of the test animals did form some pathogenic prions, none of them developed the full blown prion disease.
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| 37. | The test animal is shaved and the test material is applied to the skin and wrapped in an occlusive material.
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| 38. | She said Isacson reduced this problem by injecting only about 1, 000 stem cells into each of the test animals.
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| 39. | Biologists often cut open test animals to study what happens when they are injected with drugs or diseases, he said.
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| 40. | The same study run today without clones requires hundreds of test animals to average out the effects of individual differences.
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