Our lab is one of the largest bio-containment facilities in the world dealing with animal pathogens, some of which have the potential to infect and kill humans.

RNL Bio, affiliated with the stem cell lab of Seoul National University, said the puppies were born three weeks ago and would be sent to Japan in September for training.

But eggshells aren't the only materials that can support nanostructures; bones and other natural bio-materials are also being studied in Venkatakrishnan and Tan's lab.