Sentences with phrase «chemical in a test tube»

Not exact matches

Nor is it simply «housed» in certain neighborhoods and «contexted» in certain social «matrices,» like a chemical reaction in a test tube.

My grade - school science teacher demonstrated the chemical reaction of baking soda and vinegar by mixing them in a test tube and placing a balloon over the top so it would inflate from the gas that formed.

In further test tube experiments, the researchers treated the immortalized white blood cells with both chemical and genetic blockers, called small interfering RNA (siRNA), designed to render either p70S6K or GRB10 nonfunctional.

«The chemistry of cells, unlike more traditional chemistry in test tubes, is highly dependent on where a chemical reaction is occurring,» said Christine Payne, an associate professor in the Georgia Tech School of Chemistry and Biochemistry and one of the paper's senior authors.

Critics postulated that mouse DNA was floating in the air in the laboratories, or lying in wait in the chemical reagents used to find the virus, or sitting at the bottoms of test tubes used to collect blood specimens.

Using in vitro, or test tube, experiments, the researchers applied these chemicals to human cancer cells to measure changes of estrogen receptor - and androgen receptor - target genes and transcriptional activity.

For instance, pharmacologist Andrew Holt and his team at the University of Alberta in Canada recently discovered that chemicals released from disposable plastic test tubes interfered with a Parkinson's drug they were testing by binding to the gamma - aminobutyric acid proteins in the experiment.

Millions of new chemical compounds have been tested for their ability to disrupt the growth of M. tuberculosis in the test tube, but discouragingly few are currently in clinical trials.

Then they added a chemical called genistein, a known door - opening drug that, unfortunately, was so weak it worked only in the test tube.

The researchers have demonstrated that in test tubes a particular chemical, called CAI - 1, can induce deadly cholera cells to turn off their virulence genes.

They actually took some DNA out of their bodies, put it in a test tube, and exposed it to a known DNA - damaging chemical.

• Bolted, clamped and welded (horizontally and overhead) metal components of plates, pipes and tubes, using arc gas welding equipment • Kept work area waste free and stowed materials and equipment in an orderly manner • Installed and tested pipes according to specifications and cleaned weld joints using portable grinder and chemical bath • Repaired leaks and filled holes and cracks; also removed defective weld material and slag using carbon arc gouge and power chipper • Maintained tools and assisted in positioning and securing work pieces during installations