A helical micromotor helps an immotile but healthy bovine sperm cell get to an egg in culture.
Credit: M. Medina-Sánchez, L. Schwarz, A. K. Meyer, F. Hebenstreit & O. G. Schmidt/Nano Lett. 16, 555–561 (2016)
More than 50 years ago, physicist Richard Feynman spoke of "swallowing the surgeon" in his classic lecture, 'There's plenty of room at the bottom'.
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