Should a lab be so fortunateas to discover a molecule that cures a disease in a lab rat, the next step isto test its toxicity and efficacy in more lab animals.
要是一间实验室幸运到发现了能治愈实验室老鼠身上疾病的分子，下一个步骤是在更多的实验室动物上测试它的毒性和效用。
To test whether BMP4 was indeed responsible for the difference, these scientists artificially increased the expression_r_r of BMP4 in the zebrafish, the lab rat of the fish world.
为了证明BMP4的确是造成这种差异的原因，这些科学家们人为地提高了斑马鱼BMP4的表达强度，斑马鱼是鱼类世界的实验白鼠。
To test whether BMP4 was indeed responsible for the difference, these scientists artificially increased the expression_r_r of BMP4 in the zebrafish, the lab rat of the fish world.
为了证明BMP4的确是造成这种差异的原因，这些科学家们人为地提高了斑马鱼BMP4的表达强度，斑马鱼是鱼类世界的实验白鼠。
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