21.   Despite persistent concerns about genetically modified crops, they are spreading so rapidly that it has become almost impossible for consumers to avoid them, agriculture experts say.

22.   Despite persistent concerns about lofty valuations, investors continue to bid up share prices to the surprise of many on Wall Street.

23.   Declines in Asian stock markets refueled persistent concern that Asian economic problems will hurt the profits of Canadian exporters.

24.   Feeder cattle futures fell on persistent concern that demand will wane as it becomes less profitable to raise the young animals to market weight.

25.   Finally, workers are more cautious about making wage demands because of persistent concerns about job security.

26.   Financial stocks generally declined today, which money managers attributed to persistent concerns that the Federal Reserve will soon raise interest rates.

27.   Gains were tempered by persistent concerns about the direction of the economy, traders said.

28.   Heating oil rose to the highest price in more than three months on persistent concern U.S. inventories of will be uncomfortably low this winter.

29.   Hog futures were steady as expectations that a snowstorm in the Midwest would disrupt sales to meatpackers offset persistent concern that Asian demand is waning.

30.   In CHICAGO, feeder cattle futures fell on persistent concern that demand will wane as it becomes less profitable to raise the young animals to market weight.