Medicine: Flea

A transparent water flea called Daphnia magna has had a lot of flattering things said about it by Professor Arno Viehoever of the Philadelphia College of Pharmacy & Science. "This little animal has a divine simplicity that is miraculous," Professor Viehoever never tires of telling. "It is seemingly a primitive form of life until studied. Its fundamental biological responses are very similar to ours. It has nervous, digestive, circulatory, respiratory, optic and reproductive systems, and the beauty of it is that the animal is perfectly transparent so you can see everything that is...

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