This substance has now been cloned by molecular biologists.

这种物质现已被分子生物学家克隆。

For reasons that aren't yet well understood, cloned animals often abort spontaneously or are born with defects.

由于无法搞懂的原因，克隆动物通常会自行流产，或者具有天生缺陷。

The international trade in semen and embryos from cloned animals created in north and south America and beyond was effectively impossible to police.

在北美，南美以及其他一些地方生产的精子和克隆动物胚胎，其在国际范围内的交易已经无法加以有效监管。

The preparation of mono-cloned antibody of sulfamerazine was studied.

研究了磺胺间甲嘧啶单克隆抗体的制备。

Can Cloned Plants Live Forever?

克隆植物能否永生？