Word: sperms
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Dates: during 1930-1939
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...hope of the experiments is to find a way of producing animal life from an ovum without fertilizing it with a sperm. In the recent experiments the ova and sperms have united outside of the female, and then have been placed inside another female. "We hope to examine the growth of the egg outside of the mother's body," said Dr. Pincus, "since nobody knows exactly what the processes of reproduction are and what happens when the sperm and ovum unite...
...vitro (in glass ) is the polite name for methods by which physiologists impolitely try to fertilize ova removed from a female with sperm removed from a male. Such experiments have long been successful with forms of life lower than mammals. But attempts at external fertilization of rabbit eggs, though sometimes yielding the characteristic first signs of impregnation, never brought to birth any young...
...operative procedure, gave their performers every advantage. The agouti* doe which was to contribute the ova was first allowed to mate with a sterile buck. After removal the ova, examined to make sure they were not fertilized, were placed in a culture flask for 20 min. with the healthy sperm of a non-agouti black buck. Finally they were implanted in the right Fallopian tube of a New Zealand Red doe which had been rendered pseudopregnant by a sterile mating. The dark grey color of the bunnies, born 33 days later, was proof they did not owe their existence...
...spore grows right straight up into adultery but a sperm does not." Most difficult mathematics question...
...Define and clearly distinguish between a spore and sperm...