Sentence examples for negative samples from inspiring English sources

In fact, Dr. DiFerdinando said those 20 negative samples were from the Hamilton facility, which has had other samples test positive for anthrax.

b 400 negative samples.

c 200 negative samples.

It makes negative samples more difficult.

Extract the negative samples by (15)   5.

Ru (proportion of negative samples) was set to 1/16 of negative samples.

pneumoniae-negative samples were analyzed using this assay.

The RT-PCR-negative samples were further assayed by Northern-blot hybridization.

No HIV or hepatitis virus sequences were detected in 30 HIV-negative samples (specificity 100%).

Study design: Clinical examination of 174 samples determined 22 BV-positive and 152 BV-negative samples.

All datasets contain both ER-positive and ER-negative samples.