Word: zinc
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...Wacker reported that the organism--grown either in light or in darkness--develops "profound and complex lesions" when the growth medium is deficient in the trace metal, zinc. Under such conditions, Dr. Walker noted, growth was severely limited and cell division was halted. The cell size increased eight-fold under conditions of extreme zinc deficiency...
...result," Dr. Wacker said, "was a doubling of the DNA [deoxyribonucleic acid] in the nucleus of the cell [a process that precedes normal cell division] although the RNA [ribonucleic acid] content of the cell was markedly reduced along with protein and zinc...
...This indicates," Dr. Wacker pointed out, "that there is mitotic arrest and a block in both RNA and protein synthesis resulting from zinc deficiency--a condition that is not reversed when other trace metals [iron, manganese, copper, magnesium and calcium] metabolic precursors or metabolites, are added to the nutrient solution in which the organism is grown...
...Apparently," Dr. Wacker concluded, "zinc may be required to maintain the functional and structural integrity of euglena...
...galloping 30% ahead of last year, production is up 50%. The country clubs of Bloomfield Hills echo with bullish snorts about a 6.6 million car year, including imports, best since 1955's fabled 7.1 million. This is important to the whole economy because autos mean steel, rubber, glass, zinc, aluminum and textiles, and also because of the popular belief that if autos roll well not too much can be wrong with business in general. Now the spring selling season begins, and it will determine whether automen will have a good year -or a great...