I think we would have advanced to the stage we are at had we not used animals in the earlier stages for medical research.
Charles adopted a cutting tone which he considered he used to great effect in the final stages of an argument.
It is usually used only in the early stages of growth when the plants are forming roots clumps.
They point out that the suspect ingredients, for the most part, are used only in the early stages of manufacturing, when cultures are grown.
But RU-486 is used only in the early stages of pregnancy.
It is a fine finishing operation used in the final stages of product manufacture.
Dopamine agonists may be used in the early stages of Parkinson's disease to reduce symptoms.
Despite playing regularly for the first three months of the season, he was used only sparingly in the latter stages of the campaign.
Using these drugs in the early stages of the disease may allow treatment with levodopa to be delayed.
They were first used against land targets on 16 September 1940 in the early stages of the Blitz.