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- 量化产蛋的实验揭示了影响这种行为的神经成分和环境线索。产卵行为的变化可能表明对神经肌肉或生殖系统的毒性作用。
为了测试毒性,在线虫生长培养基板上培养发育同步的卵,有和没有感兴趣的化合物。这些实验使用热灭活的细菌蠕虫食物来防止细菌代谢化合物。让这一代人成长,直到他们成为年轻人。
然后在适当的对照或实验条件下将蠕虫移动到新平板上,让它们产卵 24 小时。每天,将成虫转移到新盘子中,并计算前一个盘子上的鸡蛋。继续直到成虫停止产卵,野生型蠕虫大约五天。计算每天每条成虫产卵的数量,并在实验结束时将总数相加。
在示例方案中,我们将使用秀丽隐杆线虫产卵测定来测试依托泊苷(一种化疗药物)的生殖毒性。
- 在含有 DMSO 或依托泊苷的 NGM 平板上,在 20 摄氏度下孵育年龄同步的种蛋 64 小时,直到成年期。将 5 条成虫转移到不含化学品的新 NGM 板或含有相同化学预处理的新 NGM 板中,并孵育 24 小时。
如刚才所示,将成虫转移到新的 NGM 板中,并每天计算鸡蛋的数量。此外,计算爬出、死亡或内部孵化的蠕虫数量。根据文本协议进行计算。
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