Sentence examples for proven negative for from inspiring English sources

Two genetic tests have proven negative for SARS, but other kinds of tests have produced mixed results, including at least one positive result, Mr. Cordingley said.

All cells were maintained at 37°C with 5% CO2 and were routinely tested and proven negative for mycoplasma contamination.

The control group included patients with palpitations who underwent various noninvasive tests, such as 12-lead standard resting electrocardiogram (ECG), conventional echocardiographic and treadmill exercise tests, but were proven negative for organic heart disease.

All proved negative for anthrax.

Do: Give urine, blood and hair samples that all prove negative for doping.

When a biopsy on Murcer's brain in March proved negative for a recurrence of cancer, one of his survivor friends, Jay Larkin, uttered a verbal leap of joy, saying "Thank God" three times.

"X-rays showed no problems with my hips, and tests proved negative for gout, arthritis and even MS".

Sera that proved negative for anti-borrelial antibodies were combined to form the NHS pool.

All 18 pre-travel samples proved negative for bacterial pathogens.

Sputum and gastric fluid culture proved negative for mycobacteria three weeks later.

All blood cell fractions proved negative for onfFN mRNA, whereas its presence in thyroid carcinoma was 78/98% (FTC/PTC).