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Nature Nanotechnology 4, 339 (1 June 2009) | doi:10.1038/nnano.2009.131

Top down bottom up: Blood ties

Melissa Krebs and Randall Erb are graduate students working on different subjects at different universities in different cities. They are also brother and sister — and recently their wish to work together sparked a collaboration on tissue engineering that means they are now co-authors as well (Nano Lett.