Word: mice
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Dates: during 1980-1989
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...tries, Illmensee and Hoppe managed to produce three such mice. The high failure rate was due mainly to the delicacy and complexity of the microma-nipulative technique involved. In subsequent experiments, however, Illmensee and Hoppe had better luck. They generated several mice from a single embryo, all genetically identical to each other and thus true clones...
...immature cells. But as cells become differentiated, they seem to lose the ability to release genetic instructions for anything other than what they have become. A red blood cell can become only another red blood cell, for example. For that reason, Illmensee and Hoppe were only able to clone mice from embryonic cells that had not yet differentiated into cells for skin, bones, brains, eyes and other parts of the body. So far, there have been no undisputed reports of cloning from mature animal cells...
Nonetheless, the Illmensee-Hoppe mice, if they are produceable in large numbers, open many new avenues for research. The mice are, in fact, less important as clones than as vehicles for experiments in embryology, cell differentiation and immunology as well as in the study of birth defects and cancer. They enable medical researchers to introduce variables into otherwise genetically identical subjects, and then observe the results...
...other scientists question the ethics, as well as the scientific use, of trying to clone humans from undifferentiated cell masses. Whatever the original genetic imprint, the results would not be predictable, and mistakes would be stamped indelibly not on mice but on men. -By John S. DeMott...
Case histories make that easy to believe. The books that are most often attacked would make a nice library for anybody with broad-gauged taste. Among them: Catcher in the Rye, Brave New World, Grapes of Wrath, Of Mice and Men, Catch-22, Soul on Ice, and To Kill a Mockingbird. Little Black Sambo and Merchant of Venice run into recurring protests based on suspicions that the former is antiblack, the latter antiSemitic. One school board banned Making It with Mademoiselle, but reversed the decision after finding out it was a how-to pattern book for youngsters hoping to learn...