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Hopes that drug therapy will improve the lot of those infected with HIV have brightened, but it is too soon to tell what the consequences will be for the general spread of the disease.
A theory believed to be successful in predicting the satellites of Uranus is not widely accepted. Much will hang on whether it has been successfully applied to Neptune.
Originally developed for immunoassays, magnetic beads in combination with streptavidin-biotin technology have demonstrated their power for separating DNA and RNA.
