The age of animal experiments is waning. Where will science go next?

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公安机关应当将传唤的原因和依据告知被传唤人。对无正当理由不接受传唤或者逃避传唤的人,经公安机关办案部门负责人批准,可以强制传唤。

A windfall, delayed

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The choanoflagellate Choanoeca flexa forms motile and contractile cell monolayers purely clonally, purely aggregatively or through a combination of both processes depending on environmental conditions.

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if (chunks === null) return null; // End of stream

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