Word: zinc
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...what makes a normal cell malignant? Most researchers think the answer will be found in cell metabolism. A malignant cell, some now think, may be just a normal cell with a peculiar digestion. Exploring one phase of this theory, a team of Harvard and M.I.T. scientists used radioactive zinc to study malignant leukemia, an incurable, cancerlike disease of the white blood cells. They found that malignant white cells have much less zinc than normal cells...
Vienna-born Dentist Bernhard Gottlieb and three colleagues at Baylor University reported a treatment which they claimed was even better than sodium fluoride: a solution of zinc chloride and potassium ferrocyanide, which plugs microscopic cracks in the teeth against bacterial invasion...
Lose It on Zinc. When he was 18 and still on the road, Owen met Bertie Keen, who married him, taught him to read & write and joined his business as a bookkeeper. In 1922, they opened a trading barn in Kansas City's stockyards, slowly developed it into a center for a widespread trading network...
...dickering urge is so strong that his wife is hardly able to get him to buy her a new saddle horse: "He's likely to sell [it] on the way home." Away from horseflesh, Owen is not so shrewd. Recently he lost around $125,000 on a zinc mine. However, he expects to make up much of the loss on his Mexican deal. Already he has shipped 1,000 mules, has another 1,000 ready to go. He figures on filling the rest of his contract long before Congress gets around to doing anything about mules...
Plants occasionally do the analyzing themselves. Many dissolved minerals are poison to some plants and healthy food to others. A certain wild pansy (Viola calaminaria, et zinci) thrives on the waste dumps of zinc mines where little else can survive. The presence of other plants points to copper, lead or petroleum...