Sentence examples for this proved negative from inspiring English sources

This proved negative, but her anxiety increases.

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

One patient proved negative in this further analysis; eight showed primary reactivity with GluA1 and seven with GluA2; six patients had other evidence of immune system involvement (Table 2).

In this manner, blocks were continued until all such possible levels either proved negative or until a positive response was encountered.

All proved negative for anthrax.

X-rays proved negative, team officials said.

They had quickly suspected radiation poisoning but tests for conventional gamma radiation had proved negative.

A blood sample and biopsy taken from her two weeks ago both proved negative.

He then went to nearby Allegheny General Hospital for tests, which proved negative.

Tests of people who were around the man have all proved negative, health officials have said.

He was taken to a hospital in Lourdes for tests, which proved negative.