Word: cago
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Dates: during 1960-1969
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...stimulating a free flow of saliva, the dentist collected a saliva sample from each child and mixed it with a special reagent. Within a few minutes, the samples showed a variety of colors. These color changes, according to an inventive biochemist, Dr. Gustav W. Rapp of Chi cago's Loyola University, predict whether a child is likely to develop a lot of tooth cavities. The colors (from an enzyme in the saliva) will indicate the children's relative risks: blue means little chance of imminent cavities, orchid means some chance, red suggests real danger, and a no-color...