The assay was not interfered with by endogenous substances.

内源性物质不干扰测定。

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Respiratory rate and ethylene evolution and the levels of endogenous growth regulating substances were determined before and after harvest during the period of senescence of cantaloupes.

本文对麻醉瓜采收前后及衰老期间的呼吸强度、乙烯生成及内源生长调节物质作了测定。

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Objective To probe the effects of preconditioning via acupoint electricity stimulation on rats' myocardial ultrastructure and endogenous protective substances level.

目的：探讨穴位电刺激预处理对大鼠心肌超微结构和内源性保护物质活力水平的影响。

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