《物种来源》（The Origin of Species）是达尔文在一八五九年发表的著述，他在此书中指出，第一、物种是会发生变化的，这个说法颠覆了基督教文化中上帝创造万物的世界观...
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通常，同一物种来源的二抗，其正常血清可以作为封闭液和稀释液。
Typically, normal serum from the same species as the secondary antibody is used in the blocking and diluent buffers.
在物种来源方面乡土树种比例较大，引进物种也是其城市绿地植被的重要组成部分。
The local trees have a bigger proportion in species origin, and the introduce species is also a important part of green place in Baoding.
"相反，在高密度情况下饲养的鱼类可能会了解到，同种物种应被视为竞争者，而不是适应性信息的潜在来源。
Instead, fish reared in high-density situations may learn that conspecifics are to be viewed as competitors, rather than as potential sources of adaptive information.
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