The practice includes developing and testing new vaccines and drugs that might prevent or cure potentially-fatal human diseases.

VOA: standard.2010.02.16

and improve the quality of human life to the extent possible without using animal testing.

以及提高人类的生活质量。

需要动物实验吗？ - SpeakingMax英语口语达人

"For example." "we cannot determine if a drug is going to work in a human being, and be safe in a human being by testing that drug in cell culture models.

VOA: standard.2010.02.16

"Since that time we've really learned that as close as they are to human species, they're not close enough for any real scientific outcomes for drug testing.I think like that" That's Elizabeth Kucinich, wife of U.S. Congressman Dennis Kucinich, she is a long-time animal welfare advocate and serves as director of public affairs, for the Physicians Committee "Over 80 different HIV-related vaccines have worked in chimpanzees but none have proven effective in human beings.

VOA: standard.2010.02.16