Krystnell A. Storr, ScienceNOW: Now Frankenstein can have a pet jellyfish. A team of scientists has taken the heart cells of a rat, arranged them on a piece of rubbery silicon, added a jolt of electricity, and created a “Franken-jelly.” Just like a real jellyfish, the artificial jelly swims around by pumping water in and out of its bell-shaped body. Researchers hope the advance can someday help engineers design better artificial hearts and other muscular organs.
"One small step for man..." can be kind of gross! Probably not going to be one of my wife's favorite postings (ironically born in the Chinese year of the rat).
Wired: Jellyfish Made From Rat Cells Swims Like the Real Thing
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