Other therapeutic H.I.V. vaccines have been tested and found to be ineffective.
The Patriot missile, retrospectively found to be ineffective in 1991, has been improved considerably.
Formal language that constantly asks for money and bombards people with the same message over and over was found to be ineffective.
Determined to try anything that might prevent a recurrence, she underwent a stem-cell transplant in 1999, before they were found to be ineffective for breast cancer.
More than 40 percent of established practices studied were found to be ineffective or harmful, 38 percent beneficial, and the remaining 22 percent unknown.
The success follows years of disappointing results in trials of other microbicides that were found to be ineffective, or even to raise a woman's risk of H.I.V. infection.
Customs and Border Patrol uses them to monitor the American border with Mexico (though the programme was recently found to be ineffective and expensive).
The report said various mass-media public health campaigns aimed at promoting healthier diets have been found to be "ineffective" in the past.
Anaesthetic blockades of pericranial nerves have been found to be ineffective [33].
The above medications have been found to be ineffective in clinical trials [35, 36].
The silane surfactant on ZnO nanoparticle was found to be ineffective for UV absorption.
