When the lady bugs were injected with dead microsporidia or a control substance most survived.

当植入死的微孢子虫或者对照物质时，大多数都存活了。

youdao

Objective: the whole blood quality control liquid can be used with the quality control substance of blood viscosity.

目的：用全血质控液作血液表观粘度的质控物。

youdao

Objective: to develop an internal quality control substance of HBV-DNA by real time quantitative PCR and to evaluate its clinical value.

目的：制备h BV - DNA荧光定量pcr检测的室内质控物，并对其应用价值进行初步评价。

youdao

The American Medical Association, the American Public Health Association and the American Nurses Association have previously called for changes in the Toxic Substance Control Act.

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In California, the Department of Toxic Substance Control brought charges against a geothermal plant for improper disposal of cartridge filters used to remove inorganic solids from the return water.

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They were discontinued in the late 1980s when Bolivia's substance-control law allowed cultivation in Yungas of 12, 000 hectares of coca intended for traditional uses.

ECONOMIST: Bolivia's coca crop