题目内容
Virtually every advance in medical science in the 20th century, from antibiotics and vaccines to antidepressant drugs and organ transplants, has been achieved either directly or indirectly through the use of __________ in laboratory experiments.
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Dr.HarveyWiley'sfamedPoisonSquadconsistedoftwelveyoungmaleswhowerethesubjectsoffeedingexperiments,conductedbetween1902and1904,usingpreservatives,includingbenzoate,borax,and______________,thatwerethenfoundintheAmericanfoodsupply.
Respect for animal welfare is often based on the belief that non-human animals are __________ and that consideration should be given to their well-being or suffering, especially when they are under the care of humans.
Animal welfare science uses various measures, such as longevity, disease, immunosuppression, behavior, physiology, and ____________, although there is debate about which of these indicators provide the best information.
The welfare of laboratory animals includes two main issues: one is their breeding and general maintenance, the other is their _________ during experimental procedures.
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