With few animal tests and (virtually no human testing), there's been next to no scientific analysis of the issue.
这方面所开展的动物试验寥寥无几(人体试验更是没有)，所以关于这个课题基本没有任何科学分析。
The purpose of the early human testing was not to study positive results form Peptide 7, but to look for any harmful side effects.
早期人体试验的目的，不是研究缩氨酸7号的积极效果，而是探索有无有害的副作用。
In general, it's difficult for scientists to pinpoint the exact causes of human myopia, and therefore its cure, since human testing usually isn't possible.
一般情况下，科学家们很难找到人类近视的确切原因，因而很难发现治愈方法，而且人体试验通常不太可能实现。
China news agency, Vancouver, July 1 (Yin Lin) - An AIDS vaccine has been adopted in Canada, animal safety testing, the researchers are awaiting approval to start human testing in the United States.
中新社温哥华七月一日电 （尹琳）一种艾滋病疫苗已经在加拿大通过了动物安全性测试，研究者们正等待批准开始在美国进行人类测试。
China news agency, Vancouver, July 1 (Yin Lin) - An AIDS vaccine has been adopted in Canada, animal safety testing, the researchers are awaiting approval to start human testing in the United States.
中新社温哥华七月一日电 （尹琳）一种艾滋病疫苗已经在加拿大通过了动物安全性测试，研究者们正等待批准开始在美国进行人类测试。
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