Investors and analysts say they are well aware of the uncertainty facing Bristol-Myers.

But analysts, portfolio managers and bankers say a takeover would be unlikely, given the uncertainty facing Oxford.

The uncertainties facing the market in 2012 will create unexpected bargains for keen-eyed property investors.

Exubera's problems add to the uncertainties facing Pfizer, whose shares have lost almost half their value since 2000.

"This divergence of opinion has its roots in the major uncertainties facing all forecasters today," the chairman said.

Labour said the appeal would only add to the uncertainty facing the industry.

"Inflation, the cautious attitude of the consumer, and the energy crisis are uncertainties facing the industry."

Our plan focuses on removing government barriers to job growth and ending the uncertainty facing families and small business.

The uncertainty facing labor in its fight to control airline companies is perhaps best illustrated by the Eastern situation.

Whether that restraint would continue in a downturn is one uncertainty facing Gibson.