Word: newt
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Dates: during 1950-1959
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...newt and toe of frog...
About six years ago, Dr. Singer was making experiments on the nervous systems of newts. His chief interest was the nerves themselves, but in the course of the experiments he found out that if he damaged the nerves in the stump of an amputee newt, the newt failed to grow a new limb. Dr. Singer concluded that a hitherto neglected function of the nerves, the promotion and control of growth, was responsible. He decided to experiment further...