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Molecular robots made of DNA have characteristics that are quite different
from today’s electrically powered robots.
For example, because they are made of the same kinds of materials as our bodies,
they are soft—and they might even be eaten by living organisms and become nutrients.
Also, like living things, they may be able to make copies of themselves.
And just as we are made of many cells, large numbers of molecular robots could gather together
and potentially do many kinds of tasks.
