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I am quietly optimistic that in the wake of years of hype over the practical significance of gene discoveries , fusion power , magic bullets , superconductivity , gene therapy , cures for ageing , and embryonic stem cells * , the public will become more pessimistic about the practical benefits of discoveries made in the lab and more appreciative of what science is really about — basic curiousity , rationality and the never-ending dialogue between ideas and experiments . Alemtuzumab also can cause myelosuppression ( i.e ., decreased blood counts ) , particularly neutrophils ( infection-fighting blood cells ) , platelets ( blood cells that help control bleeding ) , and red blood cells ( cells that carry oxygen ) .